茹立军;李文有;李文生;李亚明;

• 1:酒泉职业技术学院化学工程系
• 2:兰州理工大学有色金属新材料省部共建国家重点实验室

摘要(Abstract)：

采用石墨型铸造Cu0. 9%Cr,Cu0. 9%Cr0. 05Ce两种合金,并对合金固溶后在450℃进行不同时间的时效,利用光学显微镜、扫描电镜、导电率测量仪、电子拉伸试验机以及往复摩擦磨损试验机,研究微量Ce对Cu0. 9%Cr合金微观组织、强度、导电率和摩擦磨损的影响。结果表明:在时效前期,微量Ce的加入使Cu0. 9%Cr合金组织细化、Cr析出相增且更均匀分布,经450℃时效+4 h可达到抗拉强度峰值590 MPa,导电率达到83%IACS,且具有优异的耐磨性能;在时效后期,微量Ce的添加主要起到抑制过时效的作用,抗拉强度值下降缓慢、导电率平稳变化。

关键词(KeyWords)： 微量Ce;时效处理;微观组织;导电率;摩擦磨损

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51165021);; 甘肃省中小企业创新基金项目(X201115)资助

作者(Author): 茹立军;李文有;李文生;李亚明;

Email:

DOI:

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