形变热处理对Cu-2.7Ti-0.15Mg-0.1Ce-0.1Zr合金组织和性能的影响  

Effect of thermal-mechanical process on microstructure and property of Cu-2.7Ti-0.15Mg-0.1Ce-0.1Zr alloy

作　　者：李思[1] 姜业欣 李周[1,3] 

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083 [2]中色奥博特铜铝业有限公司,山东临清252600 [3]有色金属材料科学与工程教育部重点实验室,湖南长沙410083

出　　处：《材料热处理学报》2016年第3期127-131,共5页Transactions of Materials and Heat Treatment

基　　金：中南大学创新驱动计划项目(51271203)

摘　　要：利用力学、电学性能测试和透射电镜观察等手段研究了形变热处理对Cu-2.7Ti-0.15Mg-0.1Ce-0.1Zr合金组织与性能的影响。结果表明:合金固溶后于450℃时效8 h呈典型的调幅分解组织,还存在纳米级强化相β’-Cu4Ti。合金经固溶处理后,冷轧97.5%,在400℃时效1 h时显微组织主要为亚晶组织+纳米析出相,亚晶尺寸约为40 nm。形变热处理能够有效提高合金的综合性能,合金经过97.5%冷变形、于400℃/12 h时效后,硬度为301 HV、电导率为20.9%IACS。Effect of thermal-mechanical process on microstructure and property of Cu-2. 7Ti-0. 15Mg-0. 1Ce-0. 1Zr alloy was investigated by means of hardness test,conductivity test as well as transmission electron microscope（ TEM） observation. The results show that after solution treatment and aging at 450 ℃ for 8 h,the microstructure of the alloy is typical modulated structure with nanoscale precipitates β＇-Cu4 Ti phase. After solution treatment,97. 5% cold rolling and aging at 400 ℃ for 1 h,the microstructure of the alloy is mainly composed of nanoscale precipitates and sub-grains with an average size of 40 nm. Thermal-mechanical process can effectively enhance the comprehensive property of the alloy. After solution treatment,97. 5% cold rolling and aging at 400 ℃ for 12 h,the hardness of the alloy is 301 HV and the conductivity is 20. 9 % IACS.

关 键 词：Cu-2.7Ti-0.15Mg-0.1Ce-0.1Zr合金 形变热处理 显微组织 电导率 

分 类 号：TG146.1[一般工业技术—材料科学与工程]