Ti和Ag元素添加对Cu-Cr系合金微观组织及力/电性能影响研究  

Microstructure and Mechanical/Electrical Properties of Cu-Cr Alloys with Ti and Ag Additions

作　　者：章新能 赵明哲 何源 吴天凤 张文婧 杨振 曹祎程 ZHANG Xinneng;ZHAO Mingzhe;HE Yuan;WU Tianfeng;ZHANG Wenjing;YANG Zhen;CAO Yicheng(Wuhu Hangtian Special Cable Factory Co.,Ltd.,Wuhu 241002,China;GRIMAT Engineering Institute Co.,Ltd.,Beijing 101400,China)

机构地区：[1]芜湖航天特种电缆厂股份有限公司,安徽芜湖241002 [2]有研工程技术研究院有限公司,北京101400

出　　处：《铜业工程》2023年第4期58-62,共5页Copper Engineering

基　　金：安徽省科技重大专项项目(S2020b05050015)资助。

摘　　要：以Cu-0.5Cr和Cu-0.5Cr-0.1Ti-0.1Ag合金为实验材料,研究同时添加Ti和Ag元素对Cu-Cr系合金微观组织及力/电性能的影响。结果表明,Cu-0.5Cr和Cu-0.5Cr-0.1Ti-0.1Ag两种合金在450℃×1 h退火时达到峰时效状态,且Ti和Ag元素的加入显著提高了Cu-Cr系合金的硬度,但导电性能有所降低。同时研究了两种合金的高温抗软化行为,发现软化过程伴随着晶粒回复和再结晶,Ti和Ag元素的添加提高了Cu-Cr系合金的再结晶活化能,延缓了软化过程中合金的再结晶过程,使得Cu-0.5Cr-0.1Ti-0.1Ag合金的抗软化温度比Cu-0.5Cr合金提高约25°C。In this paper,Cu-0.5Cr and Cu-0.5Cr-0.1Ti-0.1Ag alloys were used as experimental materials to study the effects of simultaneous addition of Ti and Ag elements on the microstructure and the mechanical/electrical properties of Cu-Cr alloys.The results showed that the two alloys,Cu-0.5Cr and Cu-0.5Cr-0.1Ti-0.1Ag,reached the peak aging state when annealed at 450℃×1 h.The addition of Ti and Ag significantly improved the hardness of the Cu-Cr alloys,but the electrical conductivity was reduced.At the same time,the high-temperature anti-softening behaviors of the two alloys were investigated,and it was found that the softening process was accompanied by grain recovery and recrystallization,and the addition of Ti and Ag improved the recrystallization activation energy of Cu-Cr alloys,slowed down the recrystallization process of the alloys in the softening process,which resulted in the higher softening temperatures of Cu-0.5Cr-0.1Ti-0.1Ag alloys by 25℃ compared with that of Cu-0.5Cr alloys.

关 键 词：铜铬合金 微合金化 力学性能 导电性能 抗软化性能 再结晶 

分 类 号：TG146.1[一般工业技术—材料科学与工程]