拉拔变形程度和电磁搅拌对Cu-6%Ag合金组织及性能的影响  

Effect of Drawing Deformation and Electric Magnetic Stirring on Microstructure and Properties of Cu-6%Ag Alloy

作　　者：柳艳[1] 李贵茂[2] 殷秋菊[1] 周超梅[1] 于军[1] 

机构地区：[1]沈阳汽车工业学院机械工程系,沈阳110015 [2]辽宁科技学院冶金工程学院,本溪117004

出　　处：《机械工程材料》2013年第11期26-30,共5页Materials For Mechanical Engineering

基　　金：国家高技术研究发展计划项目(2007AA03Z519);高等学校学科创新引智计划资助项目(B07015);国家自然科学基金资助项目(51004038);科技重大专项课题(2012ZX04010031-2)

摘　　要：研究了拉拔变形程度和电磁搅拌对Cu-6%Ag合金组织、铜枝晶取向、抗拉强度和电导率的影响。结果表明:随着拉拔变形程度的增加,有、无电磁搅拌合金纤维状第二相的直径和间距不断减小,但合金的抗拉强度均增加,电导率均较铸态的有所下降;有电磁搅拌铸态合金的铜枝晶无取向,拉拔变形使铜枝晶的〈111〉取向增强;虽然有电磁搅拌合金中的纤维状第二相的直径和间距较无电磁搅拌合金的大,但其综合性能(强度和电导率)更优;电磁搅拌对拉拔变形后合金的抗拉强度影响不大,但却使电导率明显升高。The effects of drawing deformation and electic magnetic stirring （EMS） on microstructure, Cu dendrite orientation, tensile strength and electrical conductivity of Cu-6%Ag alloy were studied. The results show that diameter and spacing of the fibroid second phase in the alloys with and without EMS decreased with the increase of drawing deformation, and their tensile strength increased and their electrical conductivity was less than the casted alloy＇ s. The casted alloy with EMS had no Cu dendrite orientation, and drawing made （111 ） direction increasing. The diameter and spacing of the fibroid second phase in the alloy with EMS was larger than that in the alloy without EMS, but its combination properties of tensile strength and electrical conductivity were better. EMS had little effects on tensile strength of drawn alloy wire, but could made its electrical conductivity increasing.

关 键 词：拉拔变形程度 电磁搅拌 Cu-6%Ag合金 铜枝晶取向 抗拉强度 电导率 

分 类 号：TG146.1[一般工业技术—材料科学与工程]