冷变形时效处理对Cu-1.0Cr-0.1Zr合金性能的影响  

Effect of Cold-mechanical Heat Treatment Processing on Properties of Cu-1.0Cr-0.1Zr Alloy

作　　者：胡健[1] 宋练鹏[1,2] 王星[1] 赵凯[1] 

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083 [2]中南大学教育部有色金属材料科学与工程重点实验室,湖南长沙410083

出　　处：《热加工工艺》2012年第24期217-219,223,共4页Hot Working Technology

摘　　要：采用拉伸力学性能测试、电导率测量、金相和透射电镜技术研究不同冷变形下时效处理对Cu-1.0Cr-0.1Zr合金性能的影响。结果表明:Cu-1.0Cr-0.1Zr合金在950℃×1h固溶处理+70%冷变形+450℃×4h时效后的综合性能最好,其抗拉强度、屈服强度、伸长率和电导率分别达到543.3MPa、522.3MPa、12.68%和82.6%IACS。从合金的显微组织观察分析中可知,在此工艺下合金基体中析出了大量弥散细小的强化相,第二相析出是合金强化的重要原因。The effects of aging treatment on the properties of differently cold rolled Cu- 1.0Cr-0.1Zr alloy were analyzed using tensile tests, conductivity measurement, OM and TEM. The results show： Cu-1.0Cr-0.1Zr alloy has the best comprehensive performance after solution treatment at 950 ~C for 1 h and 70% cold rolling ratio and then aging at 450 ~C for 4 h, the tensile strength, yield strength, elongation and conductivity reach 543.3 MPa, 522.3 MPa, 12.68% and 82.6%IACS, respectively. From the microstructure observation and analysis of the alloy reveals that, in the process of aging, evenly distributed particles at nanoscale size precipitate from matrix. The second phase precipitation is the main cause of strengthening.

关 键 词：Cu-1.0Cr-0.1Zr合金 时效处理 力学性能 

分 类 号：TG156.92[金属学及工艺—热处理]