袁远

• 1:中国铁道科学研究院

摘要(Abstract)：

采用材料万能试验机、布氏硬度计、导电仪、光学显微镜(OM)和透射电镜(TEM)等测试手段研究了连续挤压对Cu-CrZr合金接触线组织及性能的影响。结果表明:连续挤压可以大幅细化晶粒尺寸,并使析出相粒子析出,导致合金的力学、电学性能大幅提高;在后续的时效处理过程中,峰值时效时间也得到大幅缩短,基体中析出大量尺寸为5 nm的Cr相;采用连续挤压生产的Cu-Cr-Zr合金接触线抗拉强度达到569 MPa,导电率达到78%·IACS,弯曲性能达到5次不开裂、7次不断裂,满足标准TB/T 2809-2017要求。

关键词(KeyWords)： Cu-Cr-Zr合金;接触线;连续挤压

Abstract:

Keywords:

基金项目(Foundation): 中国铁路总公司科技研究开发计划课题(2016J006-B)

作者(Author): 袁远

DOI: 10.13289/j.issn.1009-6264.2017-0429

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