摘要
采用大气熔炼-铁模浇铸的方法制备了Cu-Cr-Ti合金铸锭,通过热轧-固溶-时效-冷轧工艺制备了带材。采用配备电子背散射衍射系统(EBSD)的扫描电子显微镜(SEM)以及透射电子显微镜(TEM)等检测手段对冷轧后的Cu-Cr-Ti合金的组织与性能进行观测分析。结果表明,随着冷轧加工率增加,晶粒尺寸减小,位错密度增大,合金显微硬度升高;同时,变形中合金织构发生转变,随着冷轧的进行,{001}<110>旋转立方型织构减弱趋于消失,{112}<111>铜型织构先增强后减弱,{123}<634>S型织构体积分数一直增加,当加工率达到90%后,S型织构成为主要织构类型。
Cu-Cr-Ti alloy ingots were prepared by atmospheric melting-iron casting,and the strip was prepared by the successive processes in-cluding hot rolling,solid solution,aging and cold rolling.The microstructure of the cold rolled Cu-Cr-Ti alloy was investigated by using scan-ning electron microscopy(SEM)equipped with electron back-scattering diffraction(EBSD)system and transmission electron microscopy(TEM).The results show that with the increase of cold rolling processing rate,the grain size decreases,the dislocation density increases and the alloy microhardness increases.Besides,the texture evolution is evident.With the progress of cold rolling,the rotational cubic texture of{001}<110>is weakened and tends to disappear;the copper texture of{112}<111>is firstly strengthened and then weakened;the volume fraction of{123}<634>S-texture increases continuously,and when the processing rate reaches to 90%,the S-texture is the main texture type.
作者
袁继慧
陈清香
陈辉明
谢伟滨
杨斌
汪航
YUAN Ji-hui;CHEN Qing-xiang;CHEN Hui-ming;XIE Wei-bin;YANG Bin;WANG Hang(School of Materials Science and Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Shanxi Chunlei Copper Co.,Ltd.,Taiyuan 043513,China;Engineering Research Institute,Jiangxi University of Science and Technology,Ganzhou 341000,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2019年第4期164-170,共7页
Journal of Plasticity Engineering
基金
国家科技部重点研发计划资助项目(2016YFB0301400)
关键词
冷变形
Cu-Cr-Ti
组织
位错
显微硬度
织构
cold deformation
Cu-Cr-Ti
microstructure
dislocation
microhardness
texture
