Design of a new cobalt base nano-lamellar eutectic high entropy alloy

Inspired by the outstanding properties of cobalt-base superalloys, an effort has been made to develop cobalt-base high entropy alloy for high temperature applications based on valance electron concentration (VEC). The newly developed cobalt-base high entropy alloy exhibited a two-phase microstructure with nano lamellar eutectic morphology. The constituent phases were identified as face centered cubic (FCC) and ordered cubic (B2) structure, which were validated through CAlculation of PHAse Diagram (CALPHAD). The newly developed HEA exhibited remarkable strain hardening behavior at room temperature as well as thermal stability in the temperature range 500-800 degrees C. (c) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Automated summary

This study focuses on the development of cobalt-base high entropy alloy for high temperature applications based on valence electron concentration (VEC). The newly developed HEA exhibited a two-phase microstructure with remarkable mechanical properties, showing potential for high temperature applications.