时效对ECAP变形Cu-Cr-Zr合金组织与性能的影响  

Effect of aging on microstructure and properties of ECAPed Cu-Cr-Zr alloy

作　　者：梁博[1] 王庆娟[1] 周晓[1] 周滢[1] 苗承鹏 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055 [2]金川集团精密铜材有限责任公司,甘肃金昌737100

出　　处：《金属热处理》2017年第7期43-45,共3页Heat Treatment of Metals

基　　金：国家自然科学基金(51104113)

摘　　要：主要通过等通道角径挤压(ECAP)以Bc的变形方式制备出超细晶Cu-Cr-Zr合金,研究了形变热处理对Cu-Cr-Zr合金显微组织、力学性能和电导率的影响。结果表明:8道次ECAP变形后Cu-Cr-Zr合金的晶粒呈等轴晶状,晶粒细化至200 nm,经过430℃/3 h的时效处理后,Cu-Cr-Zr合金8道次的抗拉强度和导电率达到优良的匹配,其中抗拉强度为614MPa,导电率达到80%IACS,而且颈缩时伸长率为26%,这显著改善了Cu-Cr-Zr的综合性能。The Cu-Cr-Zr alloy was processed by ECAP（ equal channel angular pressing） via Bc,and the effect of aging on microstructure,properties and conductivity of Cu-Cr-Zr alloy was studied. The results show that the microstructure of Cu-Cr-Zr alloy is consist of the equiaxed grains at 8 passes,and the average grains size are 200 nm,after aging at 420 ℃ for 3 h,the Cu-Cr-Zr alloy acquires combination properties of high strength and high conductivity,good balance of strength,elongationand conductivity,which reach to 614 MPa,26% and 80% IACS respectively,it improves the comprehensive performance of the Cu-Cr-Zr alloy significantly.

关 键 词：铜铬锆合金 时效热处理 显微组织 力学性能 

分 类 号：TG146.1[一般工业技术—材料科学与工程]