Abstract:The microstructure of AlFeCrCoCuTiX (x=0,1) high-entrophy alloys fabricated by an arc remelter with as-cast structures and 800℃ tempering treated structure were investigated by XRD,SEM,EDS and DSC. The alloys wear resistance also be tested. The result show that the AlFeCrCoCu high-entrophy alloy can posses face-centered cubic (FCC) and body-centered cubic (BCC), and with the addition of titanium, the AlFeCrCoCuTi high-entrophy alloy was composed of primary dendrite phase ( The β phase rich in Al、Co、Ti and the α phase rich in Fe、Cr eutectic structure) , interdendrite phase rich in Cu and the precipitated phase that rich in Cr2Ti,Fe2Ti intermetallic compounds. With the addition of titanium，The precipitation intermetallic compound reinforced the metal，and the alloys hardness was improved. The alloys exhibits a superior resistance to temperature and softening property. The alloy was adhesive wear behaviors, the addition of Ti, due to the effect of precipitation strengthening of the precipitated phase, the alloys wear resistance is improved. And the 800 ℃ tempering alloy wear-resisting performance is more better than that of the as-cast alloy. The main reason is that with the increase of friction time, the 800 ℃ tempering alloy generateed a layer of oxide on the surface and attached to the friction surface, improve the wear resistance of the alloy.