Influence of metal powder cross-contaminations on part quality in Laser Powder Bed Fusion: copper alloy particles in maraging steel feedstock
| Autor: | Lukas Langer, Gunther Reinhart, Georg Schlick, Mario Schafnitzel, Max Horn, Christian Seidel, Simone Dietrich |
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| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Materials science Metallurgy 02 engineering and technology 010501 environmental sciences Raw material engineering.material 01 natural sciences 020901 industrial engineering & automation Impurity Ultimate tensile strength engineering General Earth and Planetary Sciences Metal powder Particle Elongation Porosity Maraging steel 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | Procedia CIRP. 94:167-172 |
| ISSN: | 2212-8271 |
| DOI: | 10.1016/j.procir.2020.09.032 |
| Popis: | Metal powder cross-contaminations are a hindrance in powder-based additive manufacturing (AM). Foreign particles can enter the powder feedstock when two different materials are processed on a single machine – either successively through material changes or simultaneously during multi-material AM. In order to evaluate the criticality of named powder impurities, this study investigates the influence of foreign particle inclusions on part quality during laser powder bed fusion of a material combination commonly processed in multi-material AM: copper alloy CW106C particles in maraging steel 1.2709 feedstock. Different contamination levels are examined regarding metallurgical structure, defect formation, and mechanical strength. It is observed that coppery inclusions are dissolved and do not cause cracks, porosity or other defects below three particle percent. Furthermore, ultimate tensile strength and fracture elongation show a slight negative trend for increasing contamination levels. |
| Databáze: | OpenAIRE |
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