首页 | 本学科首页   官方微博 | 高级检索  
     


Microstructure and mechanical properties of cryorolled AZ31 magnesium alloy sheets with different initial textures
Authors:Jin-ru Luo  Ya-qiong Yan  Ji-shan Zhang  Lin-zhong Zhuang
Affiliation:State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, P.R. China
Abstract:AZ31 magnesium alloy sheets with different strong textures were cryorolled at the liquid-nitrogen temperature to the strain of 4% and 8%. The microstructure and texture of the rolled sheets were investigated via scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and X-ray diffraction (XRD). The mechanical properties of the sheets were tested through in-plane uniaxial tensile tests at ambient temperature. The tensile stress was exerted in the rolling direction (RD) and transverse directions (TD). The microstructural and textural evolutions of the alloy during cryorolling were investigated. Due to active twining during rolling, the initial texture significantly influenced the microstructural and textural evolutions of the rolled sheets. A{1012} extension twin was found as the dominated twin-type in the cryorolled samples. After cryogenic rolling, the ductility of the samples decreased while the strength increased. Twinning also played an important role in explaining the mechanical differences between the rolled samples with different initial textures. The samples were significantly strengthened by the high stored energy accumulated from cryorolling.
Keywords:magnesium alloy  cryorolling  microstructure  mechanical properties  twinning
本文献已被 万方数据 SpringerLink 等数据库收录!
点击此处可从《矿物冶金与材料学报》浏览原始摘要信息
点击此处可从《矿物冶金与材料学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号