Microstructure and Properties of Cu-Ag-Y Alloy with High Strength and High Conductivity by Aging Treatment

摘要：

　　In order to develop a new type of e lectrical contact wires with high strength and high e lectrical conductivity, Cu-2Ag-0.5Y alloy was se lected as materials.Cu-Ag-Y alloy was prepared by continuous casting, cold drawing and aging treat ment.By means of the analysis of microhardness, e lectrical conductivity, scanning electron microscopy, and transmission electron microscopy, the aging properties and microstructures of the Cu-Ag-Y alloy were investigated at different aging tempera tures and time after different cold deformation.The results show that the Cu-2Ag-0.5Y alloy has an excellent combination of microhardness and electri cal conductivity aged at 500℃ for 4 h, the micro hardness and the dectrical conductivity reach 166 HV and 82.2% IACS, respectively.The main strengthening mechanisms for the Cu-2 % Ag0.5 % Y alloy are the work hardening and the second phase or interfaces strengthening.It was suggested that cold deformation prior to aging treatment can accelerate the precipication of the second phase, and improve the comprehensive properties of the CuAg-Y alloy.

关键词： metal materials Cu-Ag-Y alloy aging treatment structure properties

作者: Dianxiang Zhuang Ming Xie Song Wang Jiming Zhang Youcai Yang Yongtai Chen Song Chen Manmen Liu Saibei Wang

作者单位: State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino- Kunming Institute of Precious Metals,Kunming 650106,China

会议类型: 国际会议

会议名称: The 12th China-Russia Symposium on Advanced Materials and Technologies(第十二届中俄双边新材料新工艺国际会议)

会议地点: 昆明

会议语种:英文

页码: 439-442

在线出版日期: 2013-11-19（万方平台首次上网日期，不代表论文的发表时间）