Institution
Arcam
About: Arcam is a based out in . It is known for research contribution in the topics: Microstructure & Beam (structure). The organization has 49 authors who have published 103 publications receiving 5347 citations. The organization is also known as: Arcam AB.
Topics: Microstructure, Beam (structure), Layer (electronics), Cathode, Anode
Papers published on a yearly basis
Papers
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TL;DR: In this paper, an exploratory characterization and comparison of electron-beam melted (EBM) or rapid manufacturing (RM) of Ti-6Al-4V components (from nominal 30mm diameter powder) with wrought products is presented.
502 citations
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TL;DR: In this article, electron beam melting (EBM) is used to realize a selective densification of metal powder by melting it in a layerwise manner following a CAD design, and microstructure, the residual porosity and the chemical composition of the samples have been investigated both immediately after EBM and after heat treatments.
377 citations
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TL;DR: In this article, a microstructures and a columnar architecture as well as mechanical behavior of as-fabricated and processed INCONEL alloy components produced by additive manufacturing using electron beam melting (EBM) of prealloyed precursor powder are examined.
Abstract: Microstructures and a microstructural, columnar architecture as well as mechanical behavior of as-fabricated and processed INCONEL alloy 625 components produced by additive manufacturing using electron beam melting (EBM) of prealloyed precursor powder are examined in this study. As-fabricated and hot-isostatically pressed (“hipped”) [at 1393 K (1120 °C)] cylinders examined by optical metallography (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive (X-ray) spectrometry (EDS), and X-ray diffraction (XRD) exhibited an initial EBM-developed γ″ (bct) Ni3Nb precipitate platelet columnar architecture within columnar [200] textured γ (fcc) Ni-Cr grains aligned in the cylinder axis, parallel to the EBM build direction. Upon annealing at 1393 K (1120 °C) (hot-isostatic press (HIP)), these precipitate columns dissolve and the columnar, γ, grains recrystallized forming generally equiaxed grains (with coherent {111} annealing twins), containing NbCr2 laves precipitates. Microindentation hardnesses decreased from ~2.7 to ~2.2 GPa following hot-isostatic pressing (“hipping”), and the corresponding engineering (0.2 pct) offset yield stress decreased from 0.41 to 0.33 GPa, while the UTS increased from 0.75 to 0.77 GPa. However, the corresponding elongation increased from 44 to 69 pct for the hipped components.
241 citations
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TL;DR: In this paper, the metal powders used in additive manufacturing (AM) in terms of electron beam melting and selective laser melting have been investigated regarding particle size and shape using dynamic image analysis.
Abstract: Powder characterization and handling in powder metallurgy are important issues and the required powder properties will vary between different component manufacturing processes. By understanding and controlling these, the final material properties for different applications can be improved and become more reliable. In this study, the metal powders used in additive manufacturing (AM) in terms of electron beam melting and selective laser melting have been investigated regarding particle size and shape using dynamic image analysis. In parallel, powder flow characteristics have been evaluated with a powder rheometer. Correlations within the results have been found between particle shape and powder flow characteristics that could explain certain effects of the powder processing in the AM processes. The impact, however, in the processing performance as well as in ultimate material properties was found to be limited.
226 citations
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TL;DR: In this paper, the authors used electron beam melting (EBM) as a revolutionary technique to produce mass-customized parts to near-net-shape from various metallic materials.
224 citations
Authors
Showing all 49 results
Name | H-index | Papers | Citations |
---|---|---|---|
Francisco Medina | 53 | 341 | 14419 |
Anders Snis | 26 | 42 | 2022 |
Ulf Ackelid | 15 | 27 | 1345 |
Ulf Ackelid | 12 | 15 | 582 |
Ulric Ljungblad | 9 | 13 | 629 |
Morgan Larsson | 4 | 5 | 513 |
S. Collins | 4 | 5 | 1162 |
Daniel Jonasson | 3 | 3 | 101 |
Mattias Svensson | 3 | 6 | 132 |
Calle Hellestam | 3 | 4 | 164 |
Goeran Wallgren | 3 | 4 | 122 |
Frank Medina | 3 | 3 | 149 |
Morgan Larsson | 3 | 3 | 76 |
Martin Wildheim | 3 | 3 | 129 |
Mattias Fager | 2 | 4 | 86 |