Abstract
Quasi-equiatomic CoCrFeMnNi high entropy alloy (HEA) has been in-situ alloyed by selective laser melting (SLM) from a blend of CoCrFeNi pre-alloyed powder and Mn elemental powder. The blended powder shows good printability with various SLM parameters and the as-built HEA samples achieve a reliable forming quality. Despite the slight evaporation of Mn, energy dispersive spectrometer mapping and X-ray diffraction results show that the as-built HEA has a homogeneous chemical distribution and presents a single face-centred-cubic (fcc) phase, indicating successful in-situ alloying. The study has verified the feasibility of using blended powder to prepare high-quality HEA by SLM.
Original language | English |
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Pages (from-to) | 40-43 |
Number of pages | 4 |
Journal | Journal of Materials Science and Technology |
Volume | 43 |
DOIs | |
Publication status | Published - 15 Apr 2020 |
Keywords
- CoCrFeMnNi
- Crystal structure
- High entropy alloys
- In-situ alloying
- Laser processing
- Selective laser melting
ASJC Scopus subject areas
- Ceramics and Composites
- Mechanics of Materials
- Mechanical Engineering
- Polymers and Plastics
- Metals and Alloys
- Materials Chemistry