Comparing microstructure and hardness of direct metal laser sintered AlSi10Mg alloy between different planes
| Autor: | Pierre S. Ostiguy, Morteza Ghasri-Khouzani, Hao Peng, David J. Hoelzle, Joel Neidig, Richard E. Billo, Ross Attardo, M.R. Shankar |
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| Rok vydání: | 2019 |
| Předmět: |
Diffraction
Equiaxed crystals 0209 industrial biotechnology Materials science Morphology (linguistics) Strategy and Management Alloy 02 engineering and technology Management Science and Operations Research engineering.material 021001 nanoscience & nanotechnology Microstructure Industrial and Manufacturing Engineering Metal 020901 industrial engineering & automation Direct metal laser sintering visual_art Phase (matter) visual_art.visual_art_medium engineering Composite material 0210 nano-technology |
| Zdroj: | Journal of Manufacturing Processes. 37:274-280 |
| ISSN: | 1526-6125 |
| Popis: | Microstructural analysis and micro-hardness measurements were performed on different planes of AlSi10Mg alloy fabricated by direct metal laser sintering (DMLS) technique. A fine cellular dendritic network was observed within the alloy microstructure, where morphology of most cells changed from columnar on XZ-plane (vertical section) to equiaxed on XY-plane (horizontal section). Correspondingly, morphology of most grains was found to alter from columnar for the XZ-plane to equiaxed in the case of the XY-plane. Thus, the morphology of the solidification cells was determined to be strongly dependent on the morphology of the grains containing them. Moreover, X-ray diffraction (XRD) analysis revealed a similar phase assemblage for both the planes. The average micro-hardness value for the XZ-plane and XY-plane was insignificantly (≈ 3%) different, which was attributed to the random grain orientation observed on both the planes. |
| Databáze: | OpenAIRE |
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