2Cu以及硅相得到了細化。同時，添加了HEA顆粒的合金抗拉伸強度和顯微硬度得到了顯著提高。與基體相比，含12%（質(zhì)量分數(shù)）HEA 復(fù)合材料的屈服強度和極限拉伸強度分別提高了16.9%和21.9%。在 20 N載荷下，復(fù)合材料的磨損率也因顯微硬度的提高而降低，這主要歸因于載荷傳遞強化、位錯增殖和顯微結(jié)構(gòu)優(yōu)化。;High-entropy alloy (HEA), as a class of new alloy materials characterized by high stability, excellent specific strength and corrosion resistance, has attracted much attention in the field of aluminum matrix composites (AMCs). To study the effect on microstructure and mechanical properties of aluminum alloys, AlCoCrFeNi HEA particles reinforced ADC12 composites were fabricated by high energy ultrasonic casting process. Subsequently, the effect of HEAs addition on the microstructure and mechanical properties of ADC12 alloys was investigated. Results show that the added HEA particles are tightly bonded to the aluminum matrix. The Al2Cu phase in the matrix is refined. Meanwhile, the tensile strength and microhardness of the alloys with the addition of HEA particles are significantly improved. The yield strength and ultimate tensile strength of as-prepared composites with 12wt% HEAs are increased by 16.9% and 21.9% compared with those of the matrix, respectively. The wear rate of the composites is also decreased due to the enhancement of microhardness under applied load of 20 N. It is mainly attributed to the load transfer strengthening, dislocation proliferation and the optimization of the microstructure."/>