FeCrMnAlxCu(2-x)(x=1.3,1.4,1.5,1.6,1.7)high-entropy alloys(HEAs)was prepared by vacuum arc melting technology,and the influence of Al and Cu on the microstructure,mechanical prop-erties,and tribological behavior of FeCrMnAlxCu(2-x)HEAs was investigated.The results revealed that FeCrMnAlxCu(2-x)HEAs is BCC solid solution structure.The microstructure of the alloys consist of den-dritic structure.With increasing x,the yield strength gradually increase and reach a maximum value of 1 092.31 MPa at x=1.5.Both compressive strength and deformation rate exhibit a decreasing trend with increasing x,reaching their maximum values at x=1.3,which are 1 517.84 MPa and 43.36％,respec-tively.The FeCrMnAl1.7Cu0.3 HEA exhibit a maximum microhardness of 559.9 HV.The minimum wear rate is found to be 4.70× 10 6 mm3·N-1·m-1.As x increased,the dominant wear mechanisms in the alloy are primarily abrasive wear,adhesive wear,and oxidative wear.
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