Al0.25CoCrFeNiSi0.6 high entropy alloy with high hardness and improved wear resistance

摘要

The microstructure, phase composition, microhardness, and wear resistance of Al0.25CoCrFeNiSi0.6 high entropy alloy (HEA) are studied. The alloy consists of fcc + bcc solid solution phases with precipitated needle-shape Cr3Si intermetallics. The high microhardness 710 +/- 25 HV0.3 of the studied HEA can be correlated with the formation of Cr3Si. The alloy also displayed a high degree of wear resistance with wear rate of (3.1 +/- 0.5) x 10-5 (mm3 center dot N-1 center dot m-1).