中文摘要：

为了研究热处理对FeCoNiAlCrCu0．5高熵合金的显微组织和摩擦性能的影响，对合金样品进行不同温度的热处理．利用球盘往复式摩擦磨损试验机进行干摩擦实验，研究了FeCoNiAlCrCu0.5高熵合金经575℃、685℃、875℃及1000℃热处理后的摩擦磨损行为．结果表明：热处理后合金出现富Cu相β和贫Cu相γ；随着载荷的不断增加，合金的磨损逐渐严重．热处理后偏聚于晶界的富Cu相口使得FeCoNiAlCrCu0.5高熵合金整体硬度分布不均，降低了合金整体的摩擦磨损性能．

英文摘要：

Effect of annealing on the microstructure and friction and wear properties of FeCoNiAlCrCu0.5 high entropy alloys （HEAs） was investigated at different temperatures. By ball-on- disc reciprocating friction tester under dry sliding condition, the fraction and the wear behavior of FeCoNiAlCrCu0.5 HEAs were studied after heat treatment at 575 ℃, 685 ℃, 875℃ and 1 000 ℃. The results showed that the Cu-rich phase β and the Cu-depleted phase γ occurred after heat treatment, and the wear of FeCoNiAlCrCu0. 5 HEAs gradually became serious with the increasing of the load. The Cu-rich phase β segregated at the grain boundary after heat treatment, which resulted in the inhomogeneity of the hardness in FeCoNiAlCrCu0. 5 HEAs, and further decreased the friction and wear properties.