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分别采用常规浇注和机械振动辅助浇注制备了铸态FeCoCuNi高熵合金。通过显微组织、高温力学性能和高温耐磨损性能的测试与分析发现:机械振动辅助浇注使合金组织细化、减少元素偏析,提高了合金的高温力学性能和高温耐磨损性能。与常规浇注相比,机械振动辅助浇注制备的合金在1000℃下的抗拉强度增加183%、屈服强度增加352%、断后伸长率增加6%、磨损体积减小72%。
The as-cast FeCoCuNi high entropy alloys were prepared by conventional casting and mechanical vibration assisted casting respectively. Through the microstructure, high temperature mechanical properties and high temperature wear resistance of the test and analysis found that: mechanical vibration assisted casting refinement of the alloy, reducing elemental segregation and improve the high temperature mechanical properties and high temperature wear resistance. Compared with the conventional casting, the mechanical vibration assisted casting of the alloy increased tensile strength by 183% at 1000 ℃, yield strength by 352%, elongation at break by 6% and wear volume by 72%.