刘健,龚清华,吴凡,陈辉明,谢伟滨,汪航,杨斌

• 1:江西理工大学材料冶金化学学部
• 2:江西先进铜产业研究院

摘要(Abstract)：

采用真空熔炼方法制备了Cu-0.42Cr、Cu-0.50Cr-0.06Ti和Cu-0.52Cr-0.40Ti合金，并对合金进行了“热轧—固溶—时效”处理。研究了在450、550和650℃下时效不同时间对不同Ti含量的Cu-Cr-Ti合金导电率的影响，并分析了合金在时效过程中析出相的析出动力学。结果表明：Cu-0.42Cr合金导电率在时效2 h后趋于平稳，加入Ti元素后，合金则在时效8 h后导电率趋于平稳，表明析出相在此时已完全析出；Ti元素对合金导电率的影响较大，在450℃时效8 h后，Cu-0.42Cr合金的导电率为97%IACS,而Cu-0.50Cr-0.06Ti和Cu-0.52Cr-0.40Ti合金分别为80.2%IACS和34.1%IACS。根据马基申-富列明格规律和Avrami经验方程计算得到Cu-0.42Cr、Cu-0.50Cr-0.06Ti和Cu-0.52Cr-0.40Ti合金在不同时效温度的析出动力学方程和导电率方程，并通过透射电镜(TEM)统计在完全析出时的析出相体积分数，与通过析出动力学方程计算出的析出相体积分数进行了对比，计算值与统计值相符合。

关键词(KeyWords)： Cu-Cr-Ti合金;时效处理;导电率;析出动力学

Abstract:

Keywords:

基金项目(Foundation): 江西省青年井冈学者计划;; 江西省科技创新高端人才(青年)项目;; 江西理工大学高层次人才科研启动项目

作者(Author): 刘健,龚清华,吴凡,陈辉明,谢伟滨,汪航,杨斌

DOI: 10.13289/j.issn.1009-6264.2023-0156

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