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

• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2020,（8）
• 页码范围: 40-43
• 页数: 4页
• 语种: 英文

摘要

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.