吴鑫,叶喜葱,陈志洋,陈正康,王晓东,杨钧浩,贾冰,曹金凤,曾波

• 1:四川建安工业有限责任公司
• 2:三峡大学机械与动力学院

摘要(Abstract)：

采用非自耗钨极真空电弧熔炼炉制备了NiAl-30Cr-5Mo共晶高熵合金，研究了不同温度(600、700、800、900和1000℃)热处理对合金微观组织与力学性能的影响。结果表明：合金在铸态及热处理态的物相均为B2+BCC双相结构；随着热处理温度的升高，合金共晶组织显著粗化，屈服强度和硬度先增大后减小，断裂应变呈现出升高-降低-升高的趋势；总的来说，经600℃热处理后，合金的微观组织属于典型的层状共晶结构，表现出优异的综合力学性能，其屈服强度、断裂强度、断裂应变和维氏硬度分别为1137.1 MPa、1778.3 MPa、18.8%和514.2 HV30;当热处理温度大于700℃时，终端粗化机制和粗化长大机制共同作用导致合金的层状共晶组织退化。

关键词(KeyWords)： 共晶高熵合金;热处理;微观组织;力学性能;层状组织失稳机制

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 吴鑫,叶喜葱,陈志洋,陈正康,王晓东,杨钧浩,贾冰,曹金凤,曾波

DOI: 10.13289/j.issn.1009-6264.2025-0126

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