王迎鲜,贾淑果,周延军,宋克兴,李周

• 1:河南科技大学材料科学与工程学院
• 2:河南省有色金属材料科学与加工技术重点实验室
• 3:中南大学材料科学与工程学院

摘要(Abstract)：

制备了不同Co含量的Cu-0.2Be-XCo合金,研究了Co含量对挤压态合金组织的影响,并考察了显微硬度、导电率及室温拉伸性能随Co含量的变化规律。结果表明:Co元素的加入能够细化晶粒,提升合金显微硬度,但弱化导电率。合金在单向拉应力作用下发生了明显的塑性变形,形成缩颈,断裂方式为韧性断裂。同时,Co元素的添加可以提高合金的弹性极限和抗拉强度,降低伸长率。在试验范围内,Cu-0.2Be-1.0Co室温拉伸性能最佳,弹性极限为291 MPa,抗拉强度为417 MPa,伸长率为30%。

关键词(KeyWords)： Cu-Be-Co合金;显微组织;性能

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2016YFB0301401);; 国家自然科学基金重点项目(U1502274);; 河南省基础与前沿技术研究项目(162300410049);; 河南省创新型科技团队(C20150014);; 河南省高校科技创新团队(14IRTSTHN007)

作者(Author): 王迎鲜,贾淑果,周延军,宋克兴,李周

DOI: 10.13289/j.issn.1009-6264.2016-X335

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