热处理工艺对高强高导Cu-Cr-Zr系合金性能的影响  

Effects of Heat Treatment on Properties of High Strength and High Conductivity Cu-Cr-Zr Alloy

作　　者：姜锋[1] 陈蒙[1] 李金龙[1] 陈小波[1] 

机构地区：[1]中南大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2010年第11期1068-1071,共4页Special Casting & Nonferrous Alloys

基　　金：科技部国际合作重点项目(2006DFA53240);湖南省国际合作重点项目(05WK2004)

摘　　要：通过金相、透射电镜分析合金的微观结构,采用力学性能测试和电导率测试分析合金的物理性能,研究了热处理工艺对高强高导Cu-0.8Cr-0.2Zr合金性能的影响。通过对固溶-时效,固溶-冷轧-时效,固溶-时效-冷轧-退火3种热处理工艺下合金的强度和电导率进行对比,分析计算出70%冷变形、时效、退火对合金强度的影响为:163、177、-62MPa;对电导率的影响为-15.08、21.75、2.99MS/m。结合试验结果对比分析了合金在各个不同热处理后微观组织和结构的变化对合金力学和导电性能作用。经固溶+冷轧+时效工艺,合金的性能最佳:强度为529MPa,电导率为49.36MS/m,其再结晶温度为520℃。Effects of heat treatment on microstructure and properties of Cu-0.8Cr-0.2Zr alloy were investigated by OM(optical microscope),TEM(transmission electron microscope)and tensile testing,electrical conductivity measurements.Effects of 70% cold deformation,aging,annealing on strength of the alloy were analyzed by comparing tensile and electrical conductivity in condition of solid solution,solid solution +cold rolling+aging,solid solution+aging+cold rolling+annealling.The results show that effects of strength and electrical conductivity of the alloy after 70% cold deformation,aging and annealing are 163 MPa,177MPa,-162MPa and-15.08MS/m,21.75 MS/m,2.99MS/m,respectively.Strength and electrical conductivity of the alloy treated by solid solution +cold rolling+aging are 529MPa and 49.36MS/m,respectively,meanwhile,recystallization temperature is 520℃.

关 键 词：Cu-0.8Cr-0.2Zr高强 高导 热处理 

分 类 号：TG166.2[金属学及工艺—热处理]