Microstructure of Co-Cr-Fe-Mn-Ni-Cu and Co-Cr-Fe-Mn-Ni-Ag High Entropy Alloys with Liquid Phase Separation

Abstract:

Liquid phase separation is a common phenomenon observed in various types of condensed matter, including metals. The microstructure of Co-Cr-Mn-Fe-Ni-Cu and Co-Cr-Fe-Mn-Ni-Ag high entropy alloys (HEAs) with liquid phase separation was investigated. Dual fcc phases were observed in CoCrFeMnNiAg, CoCrFeMnNiCu, and CoCrFeMnNiCu₂ HEAs. A macroscopically phase separated structure formed via liquid phase separation was observed in CoCrFeMnNiAg HEA, and conventional dendritic structures were observed in CoCrFeMnNiCu and CoCrFeMnNiCu₂ HEAs.

• Periodical: Materials Science Forum (Volume 941)
• Pages: 1238-1241
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.941.1238
• Online since: December 2018
• Authors: Takeshi Nagase*
• Keywords: Electron Microscopy, High Entropy Alloys, Liquid Phase Separation, Microstructure, Solidification

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