Fabricating CoCrFeMnNi high entropy alloy via selective laser melting in-situ alloying

By Peng Chen, Sheng Li, Yinghao Zhou, M. Yan, Moataz M. Attallah. 2020

149 citations recorded by the source corpus.

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.

Subfields: Aerospace Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/c47dc46a70b22c7e7cbd336d03e818cbc080c40a