形变/热处理对Cu-Ni-Si-Mg合金组织和性能的影响  

Effects of Deformation/Heat Treatment on Microstructure and Properties of Cu-Ni-Si-Mg Alloy

作　　者：董彦非[1] 任伟[1] 李晓毅[1] 赵红利[1] 王艳芳[1] 贾淑果[2] 

机构地区：[1]洛阳市质量技术监督检验测试中心,河南洛阳471003 [2]河南科技大学,河南洛阳471003

出　　处：《热加工工艺》2012年第5期33-35,共3页Hot Working Technology

基　　金：河南省教育厅科技攻关资助项目(2009A430007)

摘　　要：研究了冷变形/时效处理对引线框架用Cu-Ni-Si-Mg合金金相组织、显微硬度及电导率的影响。结果表明:Cu-Ni-Si-Mg合金固溶后经冷轧变形,其等轴晶组织随变形量的增大,晶粒沿变形方向逐渐伸长,变形量越大,则伸长越显著,当变形量很大时,其组织呈纤维状;经形变处理后在相同温度条件下进行时效处理,时效初期显微硬度和电导率快速上升,随后到达峰值后并缓慢下降;Cu-Ni-Si-Mg合金固溶后经80%变形并在450℃时效6h后可得到良好的综合性能,此时显微硬度为305HV,电导率为36%IACS。Effects of cold deformation and aging on the micro-structure,micro-hardness and electrical conductivity of Cu-Ni-Si-Mg alloy were studied.The results show that the volume of the organization of Cu-Ni-Si-Mg alloy after cold rolling increases with its equiaxed deformation;as for the gradual elongation of grains along the deformation direction,the larger of the deformation degree,the more obvious of the elongation.When the variable volume reaches very large,tissue is fibrous.The micro-hardness and electrical conductivity increase rapidly at first,then increase slightly with the increase of the aging time.After solution at 900℃ and aging at 450℃ for 6h,the Cu-Ni-Si alloy has the excellent properties with the micro-hardness is 305HV and electrical conductivity is 36%IACS.

关 键 词：Cu-Ni-Si-Mg合金 冷变形 时效 显微硬度 电导率 

分 类 号：TG146.11[一般工业技术—材料科学与工程]