Additive Manufacturing
The Group Additive Manufacturing (AM) is concerned with innovative methods of powder- and beam-based AM, the further development of AM processes and the development of special AM alloys. The focus is on selective electron beam melting (SEBM), selective laser melting (SLM) and laser metal deposition (LMD).
Various Arcam electron beam machines for powder bed based additive manufacturing are available. In addition, there is a new in-house developed electron beam machine (Athene) equipped with a 6 kW electron beam gun. The vacuum-based electron beam technology allows building temperatures over 1000 ° C. These process conditions enable the processing of high performance materials such as intermetallic alloys or superalloys.
Journal Articles
Effect of scanning strategies on grain structure and texture of additively manufactured lattice struts: A numerical exploration
In: Advanced Engineering Materials (2024)
ISSN: 1438-1656
DOI: 10.1002/adem.202400661
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Graph-based spot melting sequence for electron beam powder bed fusion
In: Additive Manufacturing 91 (2024), Article No.: 104321
ISSN: 2214-7810
DOI: 10.1016/j.addma.2024.104321
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Extracting powder bed features via electron optical images during electron beam powder bed fusion
In: Additive Manufacturing Letters 10 (2024), Article No.: 100220
ISSN: 2772-3690
DOI: 10.1016/j.addlet.2024.100220
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Multiple interaction electron beam powder bed fusion for controlling melt pool dynamics and improving surface quality
In: Additive Manufacturing 90 (2024), Article No.: 104316
ISSN: 2214-7810
DOI: 10.1016/j.addma.2024.104316
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A new approach of preheating and powder sintering in electron beam powder bed fusion
In: International Journal of Advanced Manufacturing Technology (2024)
ISSN: 0268-3768
DOI: 10.1007/s00170-024-13966-1
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Revealing the Mechanisms of Smoke during Electron Beam–Powder Bed Fusion by High-Speed Synchrotron Radiography
In: Journal of Manufacturing and Materials Processing 8 (2024), Article No.: 103
ISSN: 2504-4494
DOI: 10.3390/jmmp8030103
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Comprehensive numerical investigation of laser powder bed fusion process conditions for bulk metallic glasses
In: Additive Manufacturing 81 (2024), Article No.: 104026
ISSN: 2214-7810
DOI: 10.1016/j.addma.2024.104026
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Numerical Microstructure Prediction for Lattice Structures Manufactured by Electron Beam Powder Bed Fusion
In: Crystals 14 (2024), Article No.: 149
ISSN: 2073-4352
DOI: 10.3390/cryst14020149
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Powder sintering kinetics during electron beam based additive manufacturing
In: Powder Technology 434 (2024), Article No.: 119332
ISSN: 0032-5910
DOI: 10.1016/j.powtec.2023.119332
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A Scan Strategy Based Compensation of Cumulative Heating Effects in Electron Beam Powder Bed Fusion
In: Progress in Additive Manufacturing (2024)
ISSN: 2363-9512
DOI: 10.1007/s40964-024-00807-6
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Design and Characterization of a Novel NiAl–(Cr,Mo) Eutectic Alloy
In: Advanced Engineering Materials (2024)
ISSN: 1438-1656
DOI: 10.1002/adem.202302079
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In situ build surface topography determination in electron beam powder bed fusion
In: Progress in Additive Manufacturing (2024)
ISSN: 2363-9512
DOI: 10.1007/s40964-024-00621-0
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Progress in electron beam additive manufacturing
In: Progress in Additive Manufacturing (2024)
ISSN: 2363-9512
DOI: 10.1007/s40964-024-00679-w
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Additive Manufacturing of TiC/Steel Composites Using Electron Beam Melting and In Situ Infiltration
In: Advanced Engineering Materials (2024)
ISSN: 1438-1656
DOI: 10.1002/adem.202301313
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MiniMelt: An instrument for real-time tracking of electron beam additive manufacturing using synchrotron x-ray techniques
In: Review of Scientific Instruments 94 (2023)
ISSN: 0034-6748
DOI: 10.1063/5.0177255
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A Thermo-Mechanical Model for Hot Cracking Susceptibility in Electron Beam Powder Bed Fusion of Ni-Base Superalloys
In: Materials & Design 237 (2023), p. 112528
ISSN: 0264-1275
DOI: 10.1016/j.matdes.2023.112528
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A return time compensation scheme for complex geometries in electron beam powder bed fusion
In: Additive Manufacturing 76 (2023), p. 103767
ISSN: 2214-7810
DOI: 10.1016/j.addma.2023.103767
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Revealing bulk metallic glass crystallization kinetics during laser powder bed fusion by a combination of experimental and numerical methods
In: Journal of Non-Crystalline Solids 619 (2023), Article No.: 122532
ISSN: 0022-3093
DOI: 10.1016/j.jnoncrysol.2023.122532
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Functional properties and shape memory effect of Nitinol manufactured via electron beam powder bed fusion
In: Materialia 30 (2023), Article No.: 101823
ISSN: 2589-1529
DOI: 10.1016/j.mtla.2023.101823
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Using Selective Electron Beam Melting to Enhance the High-Temperature Strength and Creep Resistance of NiAl–28Cr–6Mo In Situ Composites
In: Advanced Engineering Materials (2023)
ISSN: 1438-1656
DOI: 10.1002/adem.202300407
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A Ray Tracing Model for Electron Optical Imaging in Electron Beam Powder Bed Fusion
In: Journal of Manufacturing and Materials Processing 7 (2023), Article No.: 87
ISSN: 2504-4494
DOI: 10.3390/jmmp7030087
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Electron-optical observation of smoke evolution during electron beam powder bed fusion
In: Additive Manufacturing 70 (2023), Article No.: 103578
ISSN: 2214-7810
DOI: 10.1016/j.addma.2023.103578
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Evaluation of Additively-Manufactured Internal Geometrical Features Using X-ray-Computed Tomography
In: Journal of Manufacturing and Materials Processing (2023)
ISSN: 2504-4494
DOI: 10.3390/jmmp7030095
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Structure Design of Soft Magnetic Materials using Electron Beam‐based Additive Manufacturing
In: Advanced Materials (2023)
ISSN: 0935-9648
DOI: 10.1002/adma.202300837
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Geometrical Influence on Material Properties for Ti6Al4V Parts in Powder Bed Fusion
In: Journal of Manufacturing and Materials Processing 7 (2023), p. 82
ISSN: 2504-4494
DOI: 10.3390/jmmp7030082
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Additive manufacturing of cellular structures: Multiscale simulation and optimization
In: Journal of Manufacturing Processes 95 (2023), p. 275-290
ISSN: 1526-6125
DOI: 10.1016/j.jmapro.2023.03.071
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In-situ quality assurance for electron-based additive manufacturing by electron optical observation
In: Progress in Additive Manufacturing 8 (2023), p. 55-60
ISSN: 2363-9512
DOI: 10.1007/s40964-022-00382-8
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Phase-Field Study of the History-Effect of Remelted Microstructures on Nucleation During Additive Manufacturing of Ni-Based Superalloys
In: Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science (2023)
ISSN: 1073-5623
DOI: 10.1007/s11661-023-07004-0
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Correlation Between Structural Features and Magnetic Performance of Fe93.5Si6.5 (wt.%) Soft Magnetic Materials
In: Advanced Functional Materials (2023)
ISSN: 1616-301X
DOI: 10.1002/adfm.202308194
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Impact of the acceleration voltage on the processing of γ-TiAl via electron beam powder bed fusion
In: Progress in Additive Manufacturing (2023)
ISSN: 2363-9512
DOI: 10.1007/s40964-023-00499-4
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A Novel Window into Angiogenesis — Intravital Microscopy in the AV-Loop-Model
In: Cells 12 (2023), Article No.: 261
ISSN: 2073-4409
DOI: 10.3390/cells12020261
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Tubular PEM electrolysis cells with a 3D-printed oxygen electrode and ALD catalyst coating
In: International Journal of Hydrogen Energy 49 (2023), p. 437-448
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2023.08.084
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Surface topographies from electron optical images in electron beam powder bed fusion for process monitoring and control
In: Additive Manufacturing 60 (2022), Article No.: 103172
ISSN: 2214-7810
DOI: 10.1016/j.addma.2022.103172
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Predictive simulation of bulk metallic glass crystallization during laser powder bed fusion
In: Additive Manufacturing 59 (2022), Article No.: 103121
ISSN: 2214-7810
DOI: 10.1016/j.addma.2022.103121
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Impact of the Power-Dependent Beam Diameter during Electron Beam Additive Manufacturing: A Case Study with γ-TiAl
In: Applied Sciences 12 (2022), Article No.: 11300
ISSN: 2076-3417
DOI: 10.3390/app122111300
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In-situ aluminum control for titanium aluminide via electron beam powder bed fusion to realize a dual microstructure
In: Additive Manufacturing 59 (2022)
ISSN: 2214-7810
DOI: 10.1016/j.addma.2022.103132
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Electron-optical in-situ metrology for electron beam powder bed fusion: calibration and validation
In: Measurement Science & Technology 33 (2022), Article No.: 014001
ISSN: 0957-0233
DOI: 10.1088/1361-6501/ac2d5c
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3D-Printed Raney-Cu POCS as Promising New Catalysts for Methanol Synthesis
In: Catalysts 12 (2022)
ISSN: 2073-4344
DOI: 10.3390/catal12101288
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A novel approach for powder bed-based additive manufacturing of compositionally graded composites
In: Additive Manufacturing 56 (2022), Article No.: 102916
ISSN: 2214-7810
DOI: 10.1016/j.addma.2022.102916
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Correlation of powder degradation, energy absorption and gas pore formation in laser-based powder bed fusion process of AlSi10Mg0.4
In: Additive Manufacturing 56 (2022)
ISSN: 2214-7810
DOI: 10.1016/j.addma.2022.102917
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Basic Mechanism of Surface Topography Evolution in Electron Beam Based Additive Manufacturing
In: Materials 15 (2022), Article No.: 4754
ISSN: 1996-1944
DOI: 10.3390/ma15144754
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In-situ synchrotron X-ray analysis of metal Additive Manufacturing: Current state, opportunities and challenges
In: Materials and Design 219 (2022), Article No.: 110790
ISSN: 0261-3069
DOI: 10.1016/j.matdes.2022.110790
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Very high cycle fatigue durability of an additively manufactured single-crystal Ni-based superalloy
In: Additive Manufacturing 54 (2022), Article No.: 102759
ISSN: 2214-7810
DOI: 10.1016/j.addma.2022.102759
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Revealing dynamic processes in laser powder bed fusion with in situ X-ray diffraction at PETRA III
In: Review of Scientific Instruments 93 (2022)
ISSN: 0034-6748
DOI: 10.1063/5.0077105
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Microstructure analysis and mechanical properties of electron beam powder bed fusion (PBF-EB)-manufactured gamma-titanium aluminide (TiAl) at elevated temperatures
In: MP Materials Testing 64 (2022), p. 636-646
ISSN: 0025-5300
DOI: 10.1515/mt-2021-2137
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Microvascular development in the rat arteriovenous loop model in vivo-A step by step intravital microscopy analysis
In: Journal of Biomedical Materials Research Part A (2022)
ISSN: 1549-3296
DOI: 10.1002/jbm.a.37395
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Evolution of an industrial-grade Zr-based bulk metallic glass during multiple laser beam melting
In: Journal of Non-Crystalline Solids 589 (2022), Article No.: 121649
ISSN: 0022-3093
DOI: 10.1016/j.jnoncrysol.2022.121649
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Practically applicable water oxidation electrodes from 3D-printed Ti6Al4V scaffolds with surface nanostructuration and iridium catalyst coating
In: Electrochimica Acta 417 (2022), p. 140308
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2022.140308
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Electron beam-based additive manufacturing of Fe93.5Si6.5 (wt.%) soft magnetic material with controllable magnetic performance
In: Scripta Materialia 210 (2022), Article No.: 114460
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2021.114460
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Impact of Endothelial Progenitor Cells in the Vascularization of Osteogenic Scaffolds
In: Cells 11 (2022), Article No.: 926
ISSN: 2073-4409
DOI: 10.3390/cells11060926
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Influence of the microstructural homogeneity on the high-temperature oxidation behavior of a single crystalline Ni-base superalloy
In: Scripta Materialia 207 (2022), Article No.: 114301
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2021.114301
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Electron-optical in-situ crack monitoring during electron beam powder bed fusion of the Ni-Base superalloy CMSX-4
In: Progress in Additive Manufacturing (2022)
ISSN: 2363-9512
DOI: 10.1007/s40964-022-00357-9
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Microstructural evolution and mechanical properties in Zr–Cu–Al–Nb bulk metallic glass composites prepared by laser metal deposition
In: Intermetallics 140 (2022), Article No.: 107393
ISSN: 0966-9795
DOI: 10.1016/j.intermet.2021.107393
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Miniature mechanical testing of LMD-fabricated compositionally & microstructurally graded γ titanium aluminides
In: Journal of Materials Research (2022)
ISSN: 0884-2914
DOI: 10.1557/s43578-022-00801-0
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A novel mechanism to generate metallic single crystals
In: Scientific Reports 11 (2021)
ISSN: 2045-2322
DOI: 10.1038/s41598-021-04235-2
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Effect of AlSi10Mg0.4 long-term reused powder in PBF-LB/M on the mechanical properties
In: Materials & Design 212 (2021), Article No.: 110176
ISSN: 0264-1275
DOI: 10.1016/j.matdes.2021.110176
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How electron beam melting tailors the Al-sensitive microstructure and mechanical response of a novel process-adapted γ-TiAl based alloy
In: Materials & Design 212 (2021), Article No.: 110187
ISSN: 0264-1275
DOI: 10.1016/j.matdes.2021.110187
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A novel rapid alloy development method towards powder bed additive manufacturing, demonstrated for binary Al-Ti, -Zr and -Nb alloys
In: Materials & Design 211 (2021)
ISSN: 0264-1275
DOI: 10.1016/j.matdes.2021.110129
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Electron-Optical In Situ Imaging for the Assessment of Accuracy in Electron Beam Powder Bed Fusion
In: Materials 14 (2021), Article No.: 7240
ISSN: 1996-1944
DOI: 10.3390/ma14237240
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Personalized medicine for reconstruction of critical-size bone defects – a translational approach with customizable vascularized bone tissue
In: npj Regenerative Medicine 6 (2021), Article No.: 49
ISSN: 2057-3995
DOI: 10.1038/s41536-021-00158-8
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Free Transplantation of a Tissue Engineered Bone Graft into an Irradiated, Critical-Size Femoral Defect in Rats
In: Cells 10 (2021)
ISSN: 2073-4409
DOI: 10.3390/cells10092256
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A multivariate meltpool stability criterion for fabrication of complex geometries in electron beam powder bed fusion
In: Additive Manufacturing 45 (2021), Article No.: 102051
ISSN: 2214-7810
DOI: 10.1016/j.addma.2021.102051
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A scale-bridging study of the influence of TCP phases on the mechanical properties of an additive manufactured Ni-base superalloy combining microcompression testing, X-ray nanotomography and TEM
In: Microscopy and Microanalysis 27 (2021), p. 938-942
ISSN: 1431-9276
DOI: 10.1017/S1431927621003603
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A single crystal process window for electron beam powder bed fusion additive manufacturing of a CMSX-4 type Ni-based superalloy
In: Materials 14 (2021), Article No.: 3785
ISSN: 1996-1944
DOI: 10.3390/ma14143785
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New grain formation mechanisms during powder bed fusion
In: Materials 14 (2021), Article No.: 3324
ISSN: 1996-1944
DOI: 10.3390/ma14123324
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Watching the Vessels Grow: Establishment of Intravital Microscopy in the Arteriovenous Loop Rat Model
In: Tissue Engineering - Part C: Methods 27 (2021), p. 357-365
ISSN: 1937-3384
DOI: 10.1089/ten.tec.2021.0024
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A Novel Approach to Predict the Process-Induced Mechanical Behavior of Additively Manufactured Materials
In: Journal of Materials Engineering and Performance (2021)
ISSN: 1059-9495
DOI: 10.1007/s11665-021-05725-0
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Degradation of AlSi10Mg powder during laser based powder bed fusion processing
In: Materials and Design 198 (2021), Article No.: 109358
ISSN: 0261-3069
DOI: 10.1016/j.matdes.2020.109358
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In-situ electron optical measurement of thermal expansion in electron beam powder bed fusion
In: Additive Manufacturing 46 (2021)
ISSN: 2214-7810
DOI: 10.1016/j.addma.2021.102213
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Modeling laser beam absorption of metal alloys at high temperatures for selective laser melting
In: Advanced Engineering Materials 23 (2021), Article No.: 2100137
ISSN: 1438-1656
DOI: 10.1002/adem.202100137
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In‐situ Observation of γ' Phase Transformation Dynamics during Selective Laser Melting of CMSX‐4
In: Advanced Engineering Materials (2021)
ISSN: 1438-1656
DOI: 10.1002/adem.202100112
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Multi-material model for the simulation of powder bed fusion additive manufacturing
In: Computational Materials Science 194 (2021)
ISSN: 0927-0256
DOI: 10.1016/j.commatsci.2021.110415
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Electron Beam Wire Cladding of Nickel Alloys and Stainless Steel on a Reactor Pressure Vessel Steel
In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing (2021)
ISSN: 0921-5093
DOI: 10.1016/j.msea.2021.141082
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Nanostructuring of Nb-Si-Cr Alloys by Electron Beam Melting to Improve the Mechanical Properties and the Oxidation Behavior
In: Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science (2021)
ISSN: 1073-5623
DOI: 10.1007/s11661-021-06516-x
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Comparison of Transmission Measurement Methods of Elastic Waves in Phononic Band Gap Materials
In: Materials (2021)
ISSN: 1996-1944
DOI: 10.3390/ma14051133
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Numerical Alloy Development for Additive Manufacturing towards Reduced Cracking Susceptibility
In: Crystals 11 (2021)
ISSN: 2073-4352
DOI: 10.3390/cryst11080902
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Processing 4th generation titanium aluminides via electron beam based additive manufacturing – characterization of microstructure and mechanical properties
In: Materialia 14 (2020), Article No.: 100902
ISSN: 2589-1529
DOI: 10.1016/j.mtla.2020.100902
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New grain formation by constitutional undercooling due to remelting of segregated microstructures during powder bed fusion
In: Materials 13 (2020), p. 1-14
ISSN: 1996-1944
DOI: 10.3390/ma13235517
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Nanoscaled eutectic NiAl-(Cr,Mo) composites with exceptional mechanical properties processed by electron beam melting
In: Scientific Reports 10 (2020), Article No.: 15153
ISSN: 2045-2322
DOI: 10.1038/s41598-020-72093-5
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Small scale testing of IN718 single crystals manufactured by EB-PBF
In: Additive Manufacturing 36 (2020), Article No.: 101449
ISSN: 2214-7810
DOI: 10.1016/j.addma.2020.101449
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Microstructure and properties of TiAl processed via an electron beam powder bed fusion capsule technology
In: Intermetallics 126 (2020), Article No.: 106929
ISSN: 0966-9795
DOI: 10.1016/j.intermet.2020.106929
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Human Umbilical Vein Endothelial Cell Support Bone Formation of Adipose-Derived Stem Cell-Loaded and 3D-Printed Osteogenic Matrices in the Arteriovenous Loop Model
In: Tissue Engineering - Part A (2020)
ISSN: 1937-335X
DOI: 10.1089/ten.tea.2020.0087
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Measuring procedures for surface evaluation of additively manufactured powder bed based polymer and metal parts
In: Measurement Science and Technology 31 (2020), p. 1-14
ISSN: 1361-6501
DOI: 10.1088/1361-6501/ab89e2
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Electron beam based additive manufacturing of Fe3Al based iron aluminides – Processing window, microstructure and properties
In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 785 (2020), Article No.: 139369
ISSN: 0921-5093
DOI: 10.1016/j.msea.2020.139369
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Preparation of Fe-Co-B-Si-Nb bulk metallic glasses by laser powder bed fusion: Microstructure and properties
In: Materials Characterization 162 (2020), Article No.: 110206
ISSN: 1044-5803
DOI: 10.1016/j.matchar.2020.110206
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Effect of the oxygen content of pure copper powder on selective electron beam melting
In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 779 (2020), Article No.: 139106
ISSN: 0921-5093
DOI: 10.1016/j.msea.2020.139106
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Additively manufactured Raney-type Copper catalyst for methanol synthesis
In: Catalysis: Science and Technology 10 (2020), p. 164-168
ISSN: 2044-4753
DOI: 10.1039/C9CY01657K
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Fabrication of Single Crystals through a µ-Helix Grain Selection Process during Electron Beam Metal Additive Manufacturing
In: Metals (2020)
ISSN: 2075-4701
DOI: 10.3390/met10030313
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Digital Twin-enabled Collaborative Data Management for Metal Additive Manufacturing Systems
In: Journal of Manufacturing Systems (2020)
ISSN: 0278-6125
DOI: 10.1016/j.jmsy.2020.05.010
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Periodic open cellular Raney-Copper-Catalysts fabricated via selective electron beam melting
In: Advanced Engineering Materials (2020)
ISSN: 1438-1656
DOI: 10.1002/adem.201901524
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Modeling and Simulation of Microstructure Evolution for Additive Manufacturing of Metals: A Critical Review
In: Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science (2020)
ISSN: 1073-5623
DOI: 10.1007/s11661-020-05946-3
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Grain Structure Evolution of Al–Cu Alloys in Powder Bed Fusion with Laser Beam for Excellent Mechanical Properties
In: Materials 13 (2019)
ISSN: 1996-1944
DOI: 10.3390/ma13010082
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In Operando Monitoring by Analysis of Backscattered Electrons during Electron Beam Melting
In: Advanced Engineering Materials 22 (2019), Article No.: 1901102
ISSN: 1438-1656
DOI: 10.1002/adem.201901102
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Growth and coarsening kinetics of gamma prime precipitates in CMSX-4 under simulated additive manufacturing conditions
In: Acta Materialia (2019)
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2019.08.049
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Immediate development of processing windows for selective electron beam melting using layerwise monitoring via backscattered electron detection
In: Materials Letters 249 (2019), p. 70 - 72
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2019.03.048
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Effect of heat treatment on the high temperature fatigue life of single crystalline nickel base superalloy additively manufactured by means of selective electron beam melting
In: Scripta Materialia 168 (2019), p. 124-128
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2019.05.002
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Processing windows for Ti-6Al-4V fabricated by selective electron beam melting with improved beam focus and different scan line spacings
In: Rapid Prototyping Journal 25 (2019), p. 665-671
ISSN: 1355-2546
DOI: 10.1108/RPJ-04-2018-0084
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Advanced process strategy to realize microducts free of powder using selective electron beam melting
In: International Journal of Advanced Manufacturing Technology (2019)
ISSN: 0268-3768
DOI: 10.1007/s00170-019-03615-3
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Impact of build envelope on the properties of additive manufactured parts from AlSi10Mg
In: Optics and Laser Technology 111 (2019), p. 51-57
ISSN: 0030-3992
DOI: 10.1016/j.optlastec.2018.08.050
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Selective electron beam melting of an aluminum bronze: Microstructure and mechanical properties
In: Materials Letters 238 (2019), p. 241-244
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2018.12.015
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Numerical microstructure prediction by a coupled finite element cellular automaton model for selective electron beam melting
In: Computational Materials Science 162 (2019), p. 148-155
ISSN: 0927-0256
DOI: 10.1016/j.commatsci.2019.03.004
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Creep properties of single crystal Ni-base superalloys (SX): A comparison between conventionally cast and additive manufactured CMSX-4 materials
In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 762 (2019), Article No.: 138098
ISSN: 0921-5093
DOI: 10.1016/j.msea.2019.138098
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Formation of topologically closed packed phases within CMSX-4 single crystals produced by additive manufacturing
In: Materials Letters 1 (2019)
ISSN: 0167-577X
DOI: 10.1016/j.mlblux.2019.100003
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SAMPLE: A Software Suite to Predict Consolidation and Microstructure for Powder Bed Fusion Additive Manufacturing
In: Advanced Engineering Materials (2019), Article No.: 1901270
ISSN: 1438-1656
DOI: 10.1002/adem.201901270
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Layerwise monitoring of electron beam melting via backscatter electron detection
In: Rapid Prototyping Journal 24 (2018), p. 1401 - 1406
ISSN: 1355-2546
DOI: 10.1108/RPJ-02-2018-0034
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Crushing Behavior of Graded Auxetic Structures Built from Inverted Tetrapods under Impact
In: physica status solidi (b) (2018)
ISSN: 0370-1972
DOI: 10.1002/pssb.201800040
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Modeling of Laser Beam Absorption in a Polymer Powder Bed
In: Polymers 10 (2018)
ISSN: 2073-4360
DOI: 10.3390/polym10070784
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Selective Electron Beam Melting of Oxide Dispersion Strengthened Copper
In: Advanced Engineering Materials 20 (2018)
ISSN: 1438-1656
DOI: 10.1002/adem.201800068
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3D multi-layer grain structure simulation of powder bed fusion additive manufacturing
In: Acta Materialia 152 (2018), p. 119-126
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2018.04.030
, , , :
Process development of 99.95% pure copper processed via selective electron beam melting and its mechanical and physical properties
In: Materials Characterization (2018)
ISSN: 1044-5803
DOI: 10.1016/j.matchar.2018.04.009
, , , :
Powder layer deposition algorithm for additive manufacturing simulations
In: Powder Technology 330 (2018), p. 125-136
ISSN: 0032-5910
DOI: 10.1016/j.powtec.2018.02.026
, :
Microstructure and Mechanical Properties of CMSX-4 Single Crystals Prepared by Additive Manufacturing
In: Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science 49 (2018), p. 3781-3792
ISSN: 1073-5623
DOI: 10.1007/s11661-018-4762-5
, , , , , , :
Selective electron beam melting of a copper-chrome powder mixture
In: Materials Letters 223 (2018), p. 250-252
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2018.03.194
, , , :
Additive manufacturing of Ti-45Al-4Nb-C by selective electron beam melting for automotive applications
In: Additive Manufacturing 22 (2018), p. 118-126
ISSN: 2214-7810
DOI: 10.1016/j.addma.2018.05.008
, , , , , :
Electrophoretic Deposition of Boehmite on Additively Manufactured, Interpenetrating Periodic Open Cellular Structures for Catalytic Applications
In: Industrial & Engineering Chemistry Research 56 (2017), p. 13403-13411
ISSN: 0888-5885
DOI: 10.1021/acs.iecr.7b02453
, , , , , , , , :
Pedicled Transplantation of Axially Vascularized Bone Constructs in a Critical Size Femoral Defect
In: Tissue Engineering: Parts A, B, and C (2017)
ISSN: 1937-3368
DOI: 10.1089/ten.tea.2017.0110
, , , , , , , , , , , :
Evolution of full phononic band gaps in periodic cellular structures
In: Applied Physics A: Solids and Surfaces (2017), Article No.: 123:661
ISSN: 0721-7250
DOI: 10.1007/s00339-017-1278-6
, , :
Design and Additive Manufacturing of 3D Phononic Band Gap Structures Based on Gradient Based Optimization
In: Materials 10 (2017)
ISSN: 1996-1944
DOI: 10.3390/ma10101125
, , , :
Predictive Simulation of Process Windows for Powder Bed Fusion Additive Manufacturing: Influence of the Powder Bulk Density
In: Materials 10 (2017)
ISSN: 1996-1944
DOI: 10.3390/ma10101117
, , , , :
Macroscopic simulation and experimental measurement of melt pool characteristics in selective electron beam melting of Ti-6Al-4V
In: International Journal of Advanced Manufacturing Technology (2017)
ISSN: 0268-3768
DOI: 10.1007/s00170-016-8819-6
URL: http://link.springer.com/article/10.1007/s00170-016-8819-6
, , , , , :
Simulation of grain structure evolution during powder bed based additive manufacturing
In: Additive Manufacturing 13 (2017), p. 124-134
ISSN: 2214-7810
DOI: 10.1016/j.addma.2016.10.007
, , :
Numerical simulation of multi-component evaporation during selective electron beam melting of TiAl
In: Journal of Materials Processing Technology 247 (2017), p. 280-288
ISSN: 0924-0136
DOI: 10.1016/j.jmatprotec.2017.04.016
, , , :
Additive manufacturing using selective electron beam melting
In: Welding and Cutting (2017), p. 177-184
ISSN: 1612-3433
, , , :
Additive Fertigung durch selektives Elektronenstrahlschmelzen
In: Schweissen und Schneiden (2017), p. 30-39
ISSN: 0036-7184
, , , :
Fabrication and characterisation of a fully auxetic 3D lattice structure via selective electron beam melting
In: Smart Materials and Structures 26 (2017), Article No.: 025013
ISSN: 1361-665X
DOI: 10.1088/1361-665X/26/2/025013
, , , , :
Influence of the hatching strategy on consolidation during selective electron beam melting of Ti-6Al-4V
In: International Journal of Advanced Manufacturing Technology (2017), p. 1-10
ISSN: 0268-3768
DOI: 10.1007/s00170-017-0375-1
, , :
Single phase 3D phononic band gap material
In: Scientific Reports (2017), Article No.: 3843
ISSN: 2045-2322
DOI: 10.1038/s41598-017-04235-1
, , :
A multi-component evaporation model for beam melting processes
In: Modelling and Simulation in Materials Science and Engineering 25 (2017), Article No.: 025003
ISSN: 1361-651X
DOI: 10.1088/1361-651X/aa5289
, , :
Additive manufacturing of metallic components by selective electron beam melting - A review
In: International Materials Reviews 61 (2016), p. 361-377
ISSN: 0308-4590
DOI: 10.1080/09506608.2016.1176289
:
Thermal and Electrical Conductivity of 99.9% Pure Copper Processed via Selective Electron Beam Melting
In: Advanced Engineering Materials 18 (2016), p. 1661-1666
ISSN: 1438-1656
DOI: 10.1002/adem.201600078
, , , :
Impact of hot isostatic pressing on microstructures of CMSX-4 Ni-base superalloy fabricated by selective electron beam melting
In: Materials and Design 110 (2016), p. 720-727
ISSN: 0261-3069
DOI: 10.1016/j.matdes.2016.08.041
, , , , , :
Multiscale Modeling of Powder Bed-Based Additive Manufacturing
In: Annual Review of Materials Research 46 (2016), p. 93-123
ISSN: 1531-7331
DOI: 10.1146/annurev-matsci-070115-032158
, :
The effect of a negative Poisson's ratio on thermal stresses in cellular metallic structures
In: Smart Materials and Structures 25 (2016), Article No.: 115038
ISSN: 1361-665X
DOI: 10.1088/0964-1726/25/11/115038
, , , , :
A coupled Cellular Automaton–Lattice Boltzmann model for grain structure simulation during additive manufacturing
In: Computational Materials Science 124 (2016), p. 37-48
ISSN: 0927-0256
DOI: 10.1016/j.commatsci.2016.07.005
, , :
Transmission electron microscopy of a CMSX-4 Ni-base superalloy produced by selective electron beam melting
In: Metals 6 (2016), Article No.: 258
ISSN: 2075-4701
DOI: 10.3390/met6110258
, , , , , :
Microstructure of the Nickel-Base Superalloy CMSX-4 Fabricated by Selective Electron Beam Melting
In: Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science 47 (2016), p. 1469-1480
ISSN: 1073-5623
DOI: 10.1007/s11661-015-3300-y
, , :
Erratum to: ‘Grain structure evolution in Inconel 718 during selective electron beam melting’ (Materials Science & Engineering A (2016) 668 (180–187 (S0921509316305536) (10.1016/j.msea.2016.05.046))
In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 676 (2016)
ISSN: 0921-5093
DOI: 10.1016/j.msea.2016.09.016
, , , :
Numerical investigations on hatching process strategies for powder-bed-based additive manufacturing using an electron beam
In: International Journal of Advanced Manufacturing Technology 78 (2015), p. 239-247
ISSN: 0268-3768
DOI: 10.1007/s00170-014-6594-9
URL: http://link.springer.com/article/10.1007/s00170-014-6594-9
, , , :
Process development for the manufacturing of 99.94% pure copper via selective electron beam melting
In: Materials Letters 143 (2015), p. 298-301
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2014.12.105
, , :
Influence of the Scanning Strategy on the Microstructure and Mechanical Properties in Selective Electron Beam Melting of Ti-6Al-4V
In: Advanced Engineering Materials 17 (2015), p. 1573-1578
ISSN: 1438-1656
DOI: 10.1002/adem.201400542
, , , :
Solution Heat Treatment of the Single Crystal Nickel-Base Superalloy CMSX-4 Fabricated by Selective Electron Beam Melting
In: Advanced Engineering Materials 17 (2015), p. 1486-1493
ISSN: 1438-1656
DOI: 10.1002/adem.201500037
, , , , , :
Efficient hydrogen release from perhydro-N-ethylcarbazole using catalyst-coated metallic structures produced by selective electron beam melting
In: Energy and Environmental Science 8 (2015), p. 641-649
ISSN: 1754-5692
DOI: 10.1039/c4ee03461a
, , , , , , :
Combination of BMP2 and MSCs Significantly Increases Bone Formation in the Rat Arterio-Venous Loop Model
In: Tissue Engineering - Part A 21(1-2) (2015), p. 96-105
ISSN: 1937-335X
DOI: 10.1089/ten.tea.2014.0028
URL: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4293096/
, , , , , , , , , , :
A systematic approach to identify cellular auxetic materials
In: Smart Materials and Structures 24 (2015), Article No.: 025013
ISSN: 1361-665X
DOI: 10.1088/0964-1726/24/2/025013
, :
Phononic band gaps in 2D quadratic and 3D cubic cellular structures
In: Materials 8 (2015), p. 8327-8337
ISSN: 1996-1944
DOI: 10.3390/ma8125463
, :
Periodic open cellular structures with ideal cubic cell geometry: Effect of porosity and cell orientation on pressure drop behavior
In: Chemical Engineering Journal 242 (2014), p. 364-378
ISSN: 1385-8947
DOI: 10.1016/j.cej.2013.12.060
, , , , , , :
Selective electron beam melting of Ti-48Al-2Nb-2Cr: Microstructure and aluminium loss
In: Intermetallics 49 (2014), p. 29-35
ISSN: 0966-9795
DOI: 10.1016/j.intermet.2014.01.004
, :
Processing window and evaporation phenomena for Ti-6Al-4V produced by selective electron beam melting
In: Acta Materialia 76 (2014), p. 252-258
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2014.05.037
, , , :
Evaporation model for beam based additive manufacturing using free surface lattice Boltzmann methods
In: Journal of Physics D: Applied Physics 47 (2014), Article No.: 275303
ISSN: 0022-3727
DOI: 10.1088/0022-3727/47/27/275303
, , :
Characterization of hybrid components consisting of SEBM additive structures and sheet metal of alloy Ti-6Al-4V
In: Key Engineering Materials (2014), p. 609-614
ISSN: 1013-9826
DOI: 10.4028/www.scientific.net/KEM.611-612.609
, , , :
Additive manufacturing of nickel-based superalloy Inconel 718 by selective electron beam melting: Processing window and microstructure
In: Journal of Materials Research 29 (2014), p. 1987-1996
ISSN: 0884-2914
DOI: 10.1557/jmr.2014.192
, , :
Validation Experiments for LBM Simulations of Electron Beam Melting
In: International Journal of Modern Physics C (2014), p. 1-9
ISSN: 0129-1831
DOI: 10.1142/S0129183114410095
URL: http://arxiv.org/pdf/1402.2440.pdf
, , , , :
Defect generation and propagation mechanism during additive manufacturing by selective beam melting
In: Journal of Materials Processing Technology 214 (2014), p. 2522-2528
ISSN: 0924-0136
DOI: 10.1016/j.jmatprotec.2014.05.002
, , :
Phononic band gaps in periodic cellular materials
In: Advanced Engineering Materials 16 (2014), p. 328-334
ISSN: 1438-1656
DOI: 10.1002/adem.201300064
, :
Simulating fast electron beam melting with a parallel thermal free surface lattice Boltzmann method
In: Computers & Mathematics with Applications 67 (2014), p. 318-330
ISSN: 0898-1221
DOI: 10.1016/j.camwa.2013.10.001
URL: http://www.sciencedirect.com/science/article/pii/S0898122113005944
, , , , :
Modelling of electron beam absorption in complex geometries
In: Journal of Physics D-Applied Physics 47 (2014), Article No.: 065307
ISSN: 0022-3727
DOI: 10.1088/0022-3727/47/6/065307
, , :
Melt pool dynamics during selective electron beam melting
In: Applied Physics A-Materials Science & Processing 114 (2014), p. 1303-1307
ISSN: 0947-8396
DOI: 10.1007/s00339-013-7944-4
, , , :
Electron beam absorption algorithms for electron beam melting processes simulated by a three-dimensional thermal free surface lattice Boltzmann method in a distributed and parallel environment
In: Procedia Computer Science 18 (2013), p. 2127-2136
ISSN: 1877-0509
DOI: 10.1016/j.procs.2013.05.383
URL: http://www.sciencedirect.com/science/article/pii/S1877050913005267
, , , , :
Biomechanical behavior of bone scaffolds made of additive manufactured tricalciumphosphate and titanium alloy under different loading conditions
In: Journal of Applied Biomaterials and Fundamental Materials 11 (2013), p. 159-166
ISSN: 2280-8000
DOI: 10.5301/JABFM.2013.10832
, , , , , , , :
Fundamental consolidation mechanisms during selective beam melting of powders
In: Modelling and Simulation in Materials Science and Engineering 21 (2013), Article No.: 085011
ISSN: 0965-0393
DOI: 10.1088/0965-0393/21/8/085011
, , :
Maintenance of a bone collagen phenotype by osteoblast-like cells in 3D periodic porous titanium (Ti-6Al-4 V) structures fabricated by selective electron beam melting
In: Connective Tissue Research 54 (2013), p. 351-360
ISSN: 0300-8207
DOI: 10.3109/03008207.2013.822864
, , , , :
Mechanical characterisation of a periodic auxetic structure produced by SEBM
In: physica status solidi (b) 249 (2012), p. 1347-1352
ISSN: 0370-1972
DOI: 10.1002/pssb.201084211
, , , , , :
Combination of extrinsic and intrinsic pathways significantly accelerates axial vascularization of bioartificial tissues
In: Plastic and Reconstructive Surgery 129 (2012), p. 55e-65e
ISSN: 0032-1052
DOI: 10.1097/PRS.0b013e3182361f97
, , , , , , , , , :
Process specific catalyst supports-Selective electron beam melted cellular metal structures coated with microporous carbon
In: Chemical Engineering Journal (2012), p. 725-733
ISSN: 1385-8947
DOI: 10.1016/j.cej.2011.10.009
, , , , , :
In situ flaw detection by IR-imaging during electron beam melting
In: Rapid Prototyping Journal 18 (2012), p. 259-263
ISSN: 1355-2546
DOI: 10.1108/13552541211231572
, , :
Periodic open-cell foams: Pressure drop measurements and modeling of an ideal tetrakaidecahedra packing
In: Chemical Engineering Science 66 (2011), p. 2758-2763
ISSN: 0009-2509
DOI: 10.1016/j.ces.2011.03.031
, , , , , , :
Mesoscopic simulation of selective beam melting processes
In: Journal of Materials Processing Technology 211 (2011), p. 978-987
ISSN: 0924-0136
DOI: 10.1016/j.jmatprotec.2010.12.016
, , :
Erratum: Finding auxetic frameworks in periodic tessellations
In: Advanced Materials 23 (2011), p. 2669-2674
ISSN: 0935-9648
DOI: 10.1002/adma.201190118
, , , , , , , , :
Compression-compression fatigue of selective electron beam melted cellular titanium (Ti-6Al-4V)
In: Journal of Biomedical Materials Research Part B-Applied Biomaterials (2011), p. 313-320
ISSN: 1552-4973
DOI: 10.1002/jbm.b.31901
, , , , :
Design of Auxetic Structures via Mathematical Optimization
In: Advanced Materials 23 (2011), p. 2650--2654
ISSN: 0935-9648
DOI: 10.1002/adma.201004090
, , , , , , :
In vivo performance of selective electron beam-melted Ti-6Al-4V structures
In: Journal of Biomedical Materials Research Part A 92 (2010), p. 56-62
ISSN: 1549-3296
DOI: 10.1002/jbm.a.32337
, , , , , , , , , :
Auxetic cellular structures through selective electron-beam melting
In: physica status solidi (b) 247 (2010), p. 269-272
ISSN: 0370-1972
DOI: 10.1002/pssb.200945513
, , , :
Effects of topographical surface modifications of electron beam melted Ti-6Al-4V titanium on human fetal osteoblasts
In: Journal of Biomedical Materials Research Part A 84 (2008), p. 1111-1119
ISSN: 1549-3296
DOI: 10.1002/jbm.a.31540
, , , , , , , , , , :
Cellular Ti-6Al-4V structures with interconnected macro porosity for bone implants fabricated by selective electron beam melting
In: Acta Biomaterialia 4 (2008), p. 1536-1544
ISSN: 1742-7061
DOI: 10.1016/j.actbio.2008.03.013
, , , , :
Selective electron beam melting of cellular titanium: Mechanical properties
In: Advanced Engineering Materials 10 (2008), p. 882-888
ISSN: 1438-1656
DOI: 10.1002/adem.200800137
, , :
Cellular titanium by selective electron beam melting
In: Advanced Engineering Materials 9 (2007), p. 360-364
ISSN: 1438-1656
DOI: 10.1002/adem.200700025
, , , :
Book Contributions
Mechanische zellulare Metamaterialien aus Metall durch Selektives Elektronenstrahlschmelzen
In: DGM (ed.): Materialwissenschaft und Werkstofftechnik: Zellulare Werkstoffe · Zellulare Materialien, 2018, p. 16-24 (Dialog, Vol.2/2018)
, , :
Conference Contributions
Accelerating Alloy Development for Additive Manufacturing
15th International Symposium on Superalloys, ISS 2024 (Pennsylvania, PA, 8. September 2024 - 12. September 2024)
In: Jonathan Cormier, Ian Edmonds, Stephane Forsik, Paraskevas Kontis, Corey O’Connell, Timothy Smith, Akane Suzuki, Sammy Tin, Jian Zhang (ed.): Minerals, Metals and Materials Series 2024
DOI: 10.1007/978-3-031-63937-1_11
, , , , , , :
SAMPLE3D: A versatile numerical tool for investigating texture and grain structure of materials processed by PBF processes
IVth International Conference on Simulation for Additive Manufacturing (Sim-AM 2023) (München, 26. July 2023 - 28. July 2023)
DOI: 10.23967/c.simam.2023.006
, , , , :
A high-speed X-ray Radiography Setup for in-situ Electron Beam Powder Bed Fusion at PETRA III
Advances in X-Ray/EUV Optics and Components XVIII 2023 (San Diego, CA, USA, 22. August 2023)
In: Hidekazu Mimura, Ali M. Khounsary, Christian Morawe (ed.): Proceedings of SPIE - The International Society for Optical Engineering 2023
DOI: 10.1117/12.2678913
, , , , , , , , , , , , , , , :
Development of a Material Extrusion Additive Manufacturing Process of 1.2083 steel comprising FFF Printing, Solvent and Thermal Debinding and Sintering
21st CIRP Conference on Electro Physical and Chemical Machining, CIRP ISEM XXI 2022 (Zurich, 14. June 2022 - 16. June 2022)
In: Procedia CIRP 2022
DOI: 10.1016/j.procir.2022.09.140
, , , , :
Automatised quality assessment in additive layer manufacturing using layer-by-layer surface measurements and deep learning
14th CIRP Conference on Intelligent Computation in Manufacturing Engineering, CIRP ICME 2020 (Naples, ITA, 15. July 2020 - 17. July 2020)
In: Roberto Teti, Doriana M. D'Addona (ed.): Procedia CIRP 2021
DOI: 10.1016/j.procir.2021.03.050
, , , , , , , :
3D Printed Copper Waveguides by Selective Electron Beam Melting Process for E-Band
EuMW 2019 (Paris)
DOI: 10.23919/EuMC.2019.8910893
, , , , , , , , :
Additive manufacturing meets reaction engineering - Novel Raney® copper catalyst structures for methanol synthesis
2019 DGMK International Conference on Circular Economy - A Fresh View on Petrochemistry (Dresden, DEU, 9. October 2019 - 11. October 2019)
In: H. Blanke, H. Hager, A. Jess, J. A. Lercher, M. Marchionna, D. Vogt, M. Bender (ed.): DGMK Tagungsbericht 2019
, , , , :
3D grain growth simulation and experimental verification in laser beam melting of IN718
10th CIRP Conference on Photonic Technologies (LANE 2018) (Fürth, 4. September 2018 - 6. September 2018)
In: Procedia CIRP 74 (2018) 2018
DOI: 10.1016/j.procir.2018.08.034
URL: https://www.sciencedirect.com/science/article/pii/S2212827118308187/pdf?md5=ea85f15a94f75d82fce787e5b0a20225πd=1-s2.0-S2212827118308187-main.pdf
, , , , , :
Topology Optimization in Additive Manufacturing Considering the Grain Structure of Inconel 718 using Numerical Homogenization
iCAT 2018 (Maribor, 10. October 2018 - 11. October 2018)
In: Proceedings of 7th International Conference on Additive Technologies 2018
, , , , , , , , , :
3D multilayer grain structure simulation for beam-based additive manufacturing
2017 Simulation for Additive Manufacturing, Sinam 2017 (Munich, DEU, 11. October 2017 - 13. October 2017)
In: Simulation for Additive Manufacturing 2017, Sinam 2017 2017
, , :
Predictive numerical simulations of processing windows for powder bed based additive manufacturing
2017 Simulation for Additive Manufacturing, Sinam 2017 (Munich, 11. October 2017 - 13. October 2017)
In: Simulation for Additive Manufacturing 2017, Sinam 2017 2017
, , , , :
Innovative processing strategies for selective electron beam melting: Influence of scan line spacings on composition of Ti-6Al-4V and microstructure of IN718
6th International Conference on Additive Technologies iCAT 2016 (Nürnberg, 29. November 2016 - 30. November 2016)
In: Igor Drstvenšek, Dietmar Drummer, Michael Schmidt (ed.): Proceedings of 6th International Conference on Additive Technologies, Ljubljana: 2016
, , , , :
3D Grain Structure Simulation for Beam-Based Additive Manufacturing
6th International Conference on Additive Technologies iCAT (Nürnberg, 29. November 2017 - 30. November 2016)
In: Proceedings of the 6th International Conference on Additive Technologies iCAT 2016 2016
, , , :
Selective electron beam melting of the single crystalline nickel-base superalloy CMSX-4®: From columnar grains to a single crystal
13th International Symposium on Superalloys, SUPERALLOYS 2016 (Seven Springs, 11. September 2016 - 15. September 2016)
In: M. Hardy, E. Huron, U. Glatzel, B. Griffin, B. Lewis, C. Rae, V. Seetharaman, S. Tin (ed.): Superalloys 2016: Proceedings of the 13th Intenational Symposium of Superalloys 2016
DOI: 10.1002/9781119075646.ch37
, :
Creep properties of Ti-48Al-2Cr-2Nb produced by selective electron beam melting
3rd Conference on Powder Processing Consolidation and Metallurgy of Titanium, 2015 (Lüneburg, 31. August 2015 - 3. September 2015)
DOI: 10.4028/www.scientific.net/KEM.704.190
, :
Numerical Investigations of Selective Electron Beam Melting on the Powder Scale
Fraunhofer Direct Digital Manufacturing Conference 2016 (Berlin, 16. March 2016 - 17. March 2016)
In: Proceedings of the Fraunhofer Direct Digital Manufacturing Conference 2016 2016
, , , :
Tailoring the grain structure of IN718 during selective electron beam melting
2nd European Symposium on Superalloys and Their Applications, EUROSUPERALLOYS 2014 (Giens)
DOI: 10.1051/matecconf/20141408001
, , , :
Funktionsintegration durch die Kombination additiver Fertigungsprozesse mit der Blechumformung
2. Industriekolloquium des Sonderforschungsbereichs 814 - Additive Fertigung
In: Drummer, D. (ed.): 2. Industriekolloquium des Sonderforschungsbereichs 814 - Additive Fertigung 2013
, , , , :
Observation and numerical simulation of melt pool dynamic and beam powder interaction during selective electron beam melting
23rd Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2012 (Austin, TX)
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84889688177&origin=inward
, , , :
Selective Electron Beam Melting: A new way to auxetic cellular structures
20th Annual International Solid Freeform Fabrication Symposium, SFF 2009 (Austin, TX)
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84892631091&origin=inward
, , , :
Auxetic Cellular Metals
MetFoam 2009 - 6th International Conference on Porous Metals and Metallic foams (Bratislava, 2. September 2009 - 4. September 2009)
In: MetFoam 2009 - Proceedings of the 6th International Conference on Porous Metals and Metallic Foams 2009
, , :
Selective electron beam melting - A novel generative manufacturing technique for cellular titanium
5th International Conference on Porous Metals and Metallic Foams, MetFoam 2007 (Montreal, QC)
URL: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=56549129261&origin=inward
, , :
Mechanically Adapted Cellular Titanium for Bone Substitution
International Symposium on Cellular Metals for Structural and Functional Applications 2008 (Dresden)
, , :
Thesis
Electron beam-based additive manufacturing of Fe-Si soft magnetic materials (Dissertation, 2024)
:
Elektronenstrahlbasierte additive Fertigung von Titanaluminid-Bauteilen mit dualer Mikrostruktur (Dissertation, 2024)
:
Modeling and Simulation of Bulk Metallic Glass Crystallization During Laser Powder Bed Fusion (Dissertation, 2024)
DOI: 10.25593/open-fau-715
:
Fundamental Investigation of Electron-Optical Process Monitoring in Electron Beam Powder Bed Fusion (Dissertation, 2023)
URL: https://nbn-resolving.org/urn:nbn:de:bvb:29-opus4-216113
:
Grundlagen des selektiven Elektronenstrahlschmelzens von Reinkupfer (Dissertation, 2022)
:
Kornstrukturmodifikation beim Selektiven Elektronenstrahlschmelzen der Nickelbasis-Superlegierung IN718 (Dissertation, 2022)
:
Grundlegende Mechanismen bei der additiven Fertigung von technischen Einkristallen (Dissertation, 2022)
:
Laser-based additive manufacturing of bulk metallic glass-forming alloys: Processing, microstructure and properties (Dissertation, 2022)
:
Grundlagen des Elektronenstrahlschmelzens von Fe3Al basierten Eisenaluminiden (Dissertation, 2021)
:
Zellulare mechanische Metamaterialien: Design, Herstellung und Charakterisierung (Dissertation, 2021)
:
Modeling of Selective Laser Sintering of Viscoelastic Polymers (Dissertation, 2019)
:
Grundlagen des Selektiven Elektronenstrahlschmelzens von Titanaluminiden (Dissertation, 2018)
:
Selektives Elektronenstrahlschmelzen der einkristallinen Ni-Basis Superlegierung CMSX-4 (Dissertation, 2018)
:
Simulation von Verdampfungsphänomenen beim selektiven Elektronenstrahlshmelzen (Dissertation, 2017)
:
Grundlagenuntersuchungen zum selektiven Elektronenstrahlschmelzen von TiAl6V4 (Dissertation, 2016)
:
Additive Fertigung durch Selektives Elektronenstrahlschmelzen der Nickelbasis Superlegierung IN718: Prozessfenster, Mikrostruktur und mechanische Eigenschaften (Dissertation, 2016)
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Project B2 explores selective electron beam melting, which belongs to the additive manufacturing technologies, for the processing of single-crystalline superalloys. Especially the potential of the inherent high cooling rates is investigated. These lead to an ultra-fine and directional solidified microstructure. The main challenge of this project is to develop innovative processing strategies based on a sound theoretical process understanding in order to produce crack-free and preferably single crystalline samples, also with higher geometric complexity.
Cellular structures represent a promising alternative to classical randomly packed bed reactors owing to their very good heat transport characteristics. A key challenge of using cellular structures as catalyst carriers in tubular reactors is the contact of the structure with the tube wall, which in many cases is not sufficient and thus downgrades the overall heat transfer performance. Especially with strongly exo- or endothermic reactions, this inhibition of heat transfer leads to undesirable temperature…
The aim of this project is to facilitate additive manufacturing of bulk metallic components by selective laser melting based on predictive numerical simulations. There should be developed suitable process strategies to ensure the amorphous material state preferably without aging effects in the bulk as well as for complex geometries. Therefore, clear statements using the numerical simulation has to be made exceeding the temperature field and the material consolidation during manufacturing towards the solidification behavior, aging and finally crystallization.
This sub-project aims to automate the development of process strategies for selective electron beam melting. The integration of the innovative electron optics in the process cycle allows an in situ quality control and in combination with the findings from the first funding periods, the active control of the process. Finally, a self-learning system should be able to manufacture arbitrary parts of even novel alloys by a process database optimization.
The basic mechanisms that are essential in the powder based selective beam melting process are poorly understood. Most of the existing analytical and numerical models describing the process of consolidation in a homogenized image, i.e. individual powder particles are not resolved. This approach is suitable for information on averages, but cannot capture the local influence of the powder, i.e. the powder size distribution, the stochastic effect of the powder bed, the wetting of the powder by the melt and the formation of the melt. The actual selective melting process and thereby acting mechanisms can only be understood on the scale of the powder particles, with the help of numerical simulation on the mesoscopic scale. The aim of this project is to provide a numerical tool for mesoscopic simulation of selective beam melting and to use it to develop innovative process strategies. The mesoscopic scale allows the prediction of defects, surface quality and accuracy of the structure for different materials as a function of material parameters (powder form, bulk density, ...) and the process parameters (beam shape, energy per unit length, speed, ...).
In the first phase, a tool for the 2D simulation of selective electron beam melting was developed and validated with experimental results. The main task was the modeling of the entire build process with its different time scales (pre-heating, melting, applying new powder layer). Among other things, the complex coupling of the beam in the powder bed, radiation losses at the surface, mass and energy loss through evaporation and the deformation of the molten bath by the evaporation pressure is taken into account. The software is now able to simulate assembly processes, taking into account different scanning strategies on many layers. Such process strategies as the remelt strategy and the refill strategy are investigated. The verification of the numerical results is done in close cooperation with subproject B2.
In the second phase, the previous model is transferred to polymers. For this purpose, the absorption of the laser beam in the partially transparent stochastic powder bed and the highly viscous, viscoelastic material behavior must be described. Development and verification of the model is carried out in cooperation with subproject B3. In a further step, a method of 3D simulation of the grain structure in the selective beam melting of metals is implemented, in order to predict the texture of the materials as a function of process strategy.
Fundamental understanding of a new and innovative process combining sheet metal forming with additive manufacturing is the main goal of this research work.
Raney-copper is a catalyst made from a copper base alloy containing at least one less noble element than copper (e.g. zinc). After fabricating the base material via a casting process consisting of a melt and a quenching step the alloy can be converted into a nanoporous and catalytically active structure using an alkaline solution.
During this project a Raney-copper type alloy will be processed using the selective electron beam melting process (SEBM). The main goal of this project is to utilize the process’ specific characteristics like a high cooling rate and geometric freedom to build periodic cellular catalyst structures. Those cellular structures surface will then be made catalytically active for their application in the methanol synthesis process using a leaching step. In contrast to other yet fabricated cellular metal catalyst structures the Raney-copper ones do not need any further coating with active species like e.g. palladium.
Ziel dieses Projektes ist es, die Einschränkungen der bisherigen Elektronenstrahlkanone und eingeschränkten Prozesskontrolle zu überwinden, um damit einen großen Entwicklungsschritt in dieser Technologie zu vollziehen. Dazu ist geplant, die Elektronenstrahlkanone einer bei WTM vorhandenen Arcam S12 (diese wird geopfert) durch eine erheblich leistungsfähigere Elektronenstrahlkanone zu ersetzen. Auf dem Markt sind Kanonen mit sehr viel höherer Leistung bei gleichbleibend guter Strahlqualität vorhan…
Metamaterials are artificial structures with extraordinary properties as result of their internal architecture. We are investigating mechanical metamaterials manufactured by SEBM. We investigate auxetic materials characterized by a negative Poisson’s ratio as well as phononic band gap materials. Structure design rests upon basic knowledge about mechanisms generated by numerical simulation.
Additive manufacturing of components is a key technology of the future. The powder bed based selective electron beam melting process allows to produce complex components from high performance alloys. Nevertheless, the highly dynamic melting process is not fully understood and suffers from binding faults, changes of the alloy composition and process instabilities. Aim of the project is to understand the basic mechanisms during selective electron beam melting and to use this knowledge to predict and to influence the resulting materials quality. In order to reach this aim, the selevtive electron beam melting process takting selective vaporation phenomena into account is simulated based on a Lattice Boltzmann Model. Evaporation leads to material loss, has influence on the melt pool dynamics and changes the alloy composition. Simulation on the scale of the powder particles reveals phenomena which result from the complex interplay between beam, powder and melt pool. The numerical results are varified by experiments by an exemplary alloy.
Target oriented material development has to be based on a profound understanding of process-inherent mechanisms. This project aims on in-situ observation of the material consolidation process during additive manufacturing.
This includes particular phase transformations and the nucleation and growth of precipitates. The observation of these phenomena is a big challenge due to their high temporal dynamics. New experimental environments allow the observation of the formation of the microstructure of a material under AM conditions. Access to this accelerator based experimental environment allows the competence anchor DESY-FAU DHW, a cooperation between FAU and the Helmholtz centers DESY and DHW.
The overarching goal of AMAZE is to rapidly produce large defect-free additively-manufactured (AM) metallic components up to 2 metres in size, ideally with close to zero waste, for use in the following high-tech sectors namely: aeronautics, space, automotive, nuclear fusion and tooling.
Four pilot-scale industrial AM factories will be established and enhanced, thereby giving EU manufacturers and end-users a world-dominant position with respect to AM production of high-value metallic parts, by 2016. A further aim is to achieve 50% cost reduction for finished parts, compared to traditional processing.
The project will design, demonstrate and deliver a modular streamlined work-flow at factory level, offering maximum processing flexibility during AM, a major reduction in non-added-value delays, as well as a 50% reduction in shop-floor space compared with conventional factories.
AMAZE will dramatically increase the commercial use of adaptronics, in-situ sensing, process feedback, novel post-processing and clean-rooms in AM, so that (i) overall quality levels are improved, (ii) dimensional accuracy is increased by 25% (iii) build rates are increased by a factor of 10, and (iv) industrial scrap rates are slashed to <5%. Scientifically, the critical links between alloy composition, powder/wire production, additive processing, microstructural evolution, defect formation and the final properties of metallic AM parts will be examined and understood. This knowledge will be used to validate multi-level process models that can predict AM processes, part quality and performance. In order to turn additive manufacturing into a mainstream industrial process, a sharp focus will also be drawn on pre-normative work, standardisation and certification, in collaboration with ISO, ASTM and ECSS. The team comprises 31 partners: 21 from industry, 8 from academia and 2 from intergovernmental agencies. This represent the largest and most ambitious team ever assembled on this topic.
Electron beam melting additive manufacturing is used to produce successive layers of a part in a powder bed and offers the ability to produce components closest to their final dimensions, with good surface finish. At this time the process is faster than any other technique of comparable quality, however the parts are not produced at sufficient rate to make them economically viable for any but very high value specific applications. One key output of the project will be the knowledge surrounding the use of the high powder electron beam gun, including the process control, and modeled and validated understanding of beam-powder bed interaction. The target objectives is the transfer of the 2D model to a 3D model and its parallel implementation. The outcome of the simulation will be compared with real experimental data and therefore the model parameters are adjusted in such a way that the resulting numerical melt pool sizes correspond to the experimental ones.
Titanaluminde haben durch das Ersetzen deutlich schwererer Nickelbasislegierungen großes Potential für Kraftstoffeinsparungen in zukünftige Generationen von Flugzeug- und Kraftwerksturbinen. Die Verarbeitung dieser Materialien gestaltet sich allerdings äußerst schwierig, da die Materialeigenschaften stark von der Mikrostruktur und chemischen Homogenität des Endproduktes abhängen. Im vorliegenden Vorhaben soll ein Rapid Manufacturing Prozess, das selektive Elektronenstrahlschmelzen, zur Verarb…
The electron beam offers the potential for innovative selective beam melting process strategies due its inertia-free deflection at extremely high speed.
A deep understanding of the process is developed with the help of different methods of in-situ process monitoring (thermal imaging and high speed camera). In particular, the potential to tailor the microstructure, grain structure and texture of the material with the help of the extremely high beam velocity is explored. In addition, we investigate the mechanisms of evaporation induced material displacement and the possibility to use this effect to realize hollow structures within components.
CRC DFG 814 “Additive Manufacturing” (http://www.sfb814.forschung.uni-erlangen.de/).
A further focus is on processing of single crystalline nickel-base alloys. We are designing building strategies to avoid cold and hot crack formation. The main challenge is to control directional and rapid solidification in order to realize single crystals directly developing from powder particles without any seed material. We are now able to realize large single crystals out of nickel-base alloys with unique homogeneity by selective electron beam melting.
CRC DFG TR 103 “From Atom to Turbine Blade” (http://www.sfb-transregio103.de/).
We investigate the potential of SEBM for processing of technical alloys based on Iron Aluminides, Nickel and Copper as well as amorphous metals.
For Iron aluminides, the focus is on the influence of additional elements such as Boron and Titanium on the workability, the microstructure and the resulting properties.
Concerning pure Copper and Copper alloys our focus is on the influence of minor elements or contaminations such as Oxygen or Phosphorus on the resulting properties, in particular the achievable heat conductivity
Commercial available EBSM machines show strong limitations with respect to the beam power, beam quality and beam control. To overcome these limitations, the electron gun and control system of an Arcam S12 System was renewed. The resulting machine is equipped with a 6 kW electron beam gun and a backscattering electron detector for process monitoring. This is the first electron beam AM machine where the electron beam serves for both, processing and analyzing.
We investigate new alloys for structural catalysts that serve as carrier material and simultaneously as catalytically active material in structured reactors. The active catalyst (Raney copper type) develops from the AM manufactured structure by leaching. Thus, geometric restrictions of complex coating processes for catalytic functionalization disappear. The direct generation of the catalytically active material on the carrier structure is expected to show advantages with respect to thermal management. In order to demonstrate the potential of structural catalysts we consider the methanol synthesis.
We use combinatorial methods for the development of new alloys that allow the creation of large material libraries based on thermodynamic predictions. To do this, the Chair of WTM is currently establishing a laser metal deposition machine from the company InssTek. This machine is equipped with four powder hoppers in a glove box with inert gas atmosphere. Besides materials libraries we are also able to realize multi-material and graded components.
Target oriented material development has to be based on a profound understanding of process-inherent mechanisms. This project aims on in-situ observation of the material consolidation process during additive manufacturing.
This includes particular phase transformations and the nucleation and growth of precipitates. The observation of these phenomena is a big challenge due to their high temporal dynamics. New experimental environments allow the observation of the formation of the microstructure of a material under AM conditions. Access to this accelerator based experimental environment allows the competence anchor DESY-FAU DHW, a cooperation between FAU and the Helmholtz centers DESY and DHW.
We examine the possibility to process high performance alloys such as non-weldable Nickel-base alloys or special Copper alloys by means of SEBM. There are also experiences in the processing of Titanium alloys, in particular for medical applications, Titanium aluminides and steels.
Based on the gained knowledge of projects B4 and C5, the aim of this project is to account for the influence of part borders on the resulting material/part-mesostructure for powder- and beam-based additive manufacturing technologies of metals and to model the resulting meso- and macroscopic mechanical properties. The mechanical behavior of these mesostructures and the influence of the inevitable process-based geometrical uncertainties is modelled, verified, quantified and validated especially for cellular grid-based structures.