【作者】 贾淑果； 刘平； 任凤章； 田保红； 郑茂盛； 周根树；

【Author】 JIA Shu-guo, LIU Ping, REN Feng-zhang, TIAN Bao-hong, ZHENG Mao-sheng, ZHOU Gen-shu (School of Materials Science and Engineering, Henan University of Scienceand Technology, Luoyang 471039, China; School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049,China)

【机构】 河南科技大学材料学院； 西安交通大学材料学院；

【摘要】 采用真空熔炼的方法制备了Cu-Cr和Cu- Ag-Cr合金,通过显微硬度测试、电导率测试、透射电镜分析等方法,对这两种合金的时效性能进行了研究, 并探讨了Ag对Cu-Cr合金时效性能的影响。结果表明:Cu-Ag-Cr合金在440℃时效4h达到电导率和显微硬度的良好结合;微量AR的加入,使得Cu-Cr合金在440℃时效时的峰值硬度约增加6HV,且明显抑制 Cu-Cr合金的过时效。更多还原

【Abstract】 By means of a vacuum induction furnace, Cu-Ag-Cr and Cu-Cr alloy are produced. The aging properties of the two alloys are studied, and the influences of trace Ag on the aging properties of the Cu-Cr alloy are discussed by means of tensile test, optical microscopy and transmission electron microscopy. The results showed that Cu-Ag-Cr alloy had an excellent combination of microhardness and electrical conductivity. The peak microhardness of Cu-Cr alloy increased 6HV aged at 440℃ , and the over-aging of the Cu-Cr alloy was restrained effectively due to the trace Ag addition.更多还原