摘要
在现代工业中广泛应用的点焊电极用铜合金材料多为铬铜、铬锆铜和Al_2O_3弥散强化铜,主要因其导电性、导热性、高温强度、硬度和可加工性。综述了多种强化技术的机理和工艺,通过对基体进行固溶时效和形变强化处理,或进行深冷处理,或通过Al_2O_3、TiB_2、石墨、碳纳米管等对基体进行弥散强化,可以有效地提高铜合金性能。展望了点焊电极用铜合金的强化技术。
The copper alloy materials for spot welding electrodes widely used in modern industry are Cu-Cr、Cu-Zr、Cu-Cr-Zr and Al2O3dispersion strengthened copper because of their electrical conductivity,thermal conductivity,high temperature strength,hardness and machinability.The mechanisms and technologies of various strengthening methods are summarized.By conducting solid solution aging treatment,deformation strengthening treatment or cryogenic treatment on the matrix,or conducting dispersion strengthening on the matrix with Al2O3,TiB2,graphite and carbon nano tubes,the performance of the copper alloy can be effectively improved.Finally,the strengthening methods of copper alloys for spot welding electrodes are prospected.
作者
熊灿
罗平
刘康
官旭
董仕节
XIONG Can;LUO Ping;LIU Kang;GUAN Xu;DONG Shijie(College of Materials and Chemical Engineering,Hubei University of Technology,Wuhan 430068,China;Hubei Provincial Key Laboratory of Green Materials for Light Industry,Wuhan 430068,China)
出处
《电焊机》
2017年第12期113-116,共4页
Electric Welding Machine
基金
国家自然科学基金(51375150)
博士科研启动基金(BSQD2015015)
关键词
铜合金
强度
强化机理
弥散强化
copper alloy
strength
strengthening mechanism
dispersion strengthening
