Microstructure and Thermal Analysis of Metastable Intermetallic Phases in High-Entropy Alloy CoCrFeMoNi.

CoCrFeMoNi high entropy alloys (HEAs) exhibit several promising characteristics for potential applications of high temperature coating. In this study, metastable intermetallic phases and their thermal stability of high-entropy alloy CoCrFeMoNi were investigated via thermal and microstructural analyses. Solidus and liquidus temperatures of CoCrFeMoNi were determined by differential thermal analysis as 1323 °C and 1331 °C, respectively.