秦永强,司永健,罗来马,马冰,张一帆,吴玉程

• 1:合肥工业大学材料科学与工程学院
• 2:有色金属与加工技术国家地方联合工程研究中心
• 3:高性能铜合金材料及成形加工教育部工程研究中心

摘要(Abstract)：

采用固液掺杂结合放电等离子体烧结法制备了Y_2O_3和CNT两种增强相材料协同强化Cu基复合材料。研究了不同含量增强相对复合材料力学性能和物理性能的影响，并研究了氧化钇和碳纳米管颗粒的协同强化机制。结果表明：Y_2O_3具有弥散强化作用，在烧结过程中阻碍了铜晶粒的生长，并对位错运动起到钉扎作用，可提高复合材料的强度；碳纳米管对复合材料导电性能的提升起着重要作用；Cu-0.9 vol%Y_2O_3-0.9 vol%CNT复合材料的综合性能最佳，导电率达到92.43%IACS,硬度、抗拉强度和伸长率分别为107.25 HV0.1、182.29 MPa和20.93%。复合材料的强化机制主要为奥罗万机制、细晶强化、热失配强化和载荷转移强化。

关键词(KeyWords)： 碳纳米管;氧化钇;协同强化;弥散强化铜

Abstract:

Keywords:

基金项目(Foundation): 安徽省自然科学基金(2208085ME122);; 安徽省科技重大专项(202103a05020002);; 国家重点研发计划资助项目(2019YFE03120002)

作者(Author): 秦永强,司永健,罗来马,马冰,张一帆,吴玉程

DOI: 10.13289/j.issn.1009-6264.2023-0304

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