Effect on Microstructure and Nanoindentation of a AlCoFeMoNi High Entropy Alloy

Abstract

In this work, elemental powders supplied by Alfa Aesar with purity higher than 99.5% in weight Al, Co, Fe, Mo and Ni were initially weighed and mixed. The MA was performed in a high-energy ball mill (SPEX-8000M) for 10 h periods, under an argon atmosphere. Methanol was used as a process control agent to avid metal agglomeration. The milled powders were melting by electric arc furnacean argon atmosphere to prevent oxidation. The ingots were remelted at least 5 times to improve chemical homogeneity