Resistance to Contact Deformation during Intense Wear of the Surface of Ni–Co–Cr Cast Entropy Alloys

Abstract—The tribological characteristics of Ni–Co–Cr entropy alloys under dry sliding friction contact deformation are studied. The results show that the hardness of the equimass alloy is 10% greater than that of the equiatomic alloy, and the use of additional alloying increases the hardness of the equiatomic alloy by 20–45%. The wear resistance of the alloys depends slightly on the hardness and, to a greater extent, on hardening due to the accumulation of subsurface defects.