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

Research output: Contribution to journalArticle

Authors

Colleges, School and Institutes

External organisations

  • The Advanced Materials Processing Lab. (AMPLAB)
  • South University of Science and Technology of China

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.

Details

Original languageEnglish
Pages (from-to)40-43
Number of pages4
JournalJournal of Materials Science and Technology
Volume43
Publication statusPublished - 15 Apr 2020

Keywords

  • CoCrFeMnNi, Crystal structure, High entropy alloys, In-situ alloying, Laser processing, Selective laser melting