文献类型：期刊文献

英文题名：Significantly extending the gradient layer and mechanical properties of Mg alloys by texture optimization

作者：Guan, Bo[1];Xu, Jing[1];Fu, Rui[2];Xu, Shiyuan[3];Li, Xiao[4];Jia, Yunfei[5];Hu, Qiang[1];Xin, Yunchang[1,3]

机构：[1]Jiangxi Acad Sci, Inst Appl Phys, Jiangxi Key Lab Adv Copper Based Mat, Nanchang, Peoples R China;[2]Chongqing Univ, Sch Mat Sci & Engn, Chongqing, Peoples R China;[3]Nanjing Tech Univ, Key Lab Light Weight Mat, Nanjing, Peoples R China;[4]Huzhou Univ, Sch Engn, Huzhou, Peoples R China;[5]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai, Peoples R China

年份：2025

卷号：13

期号：7

起止页码：768

外文期刊名：MATERIALS RESEARCH LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001504596600001)】；

基金：This work was financially supported by National Natural Science Foundation of China (52401151, 52301151 and 52222505), Jiangxi Provincial Natural Science Foundation (20232BAB214002), Key R&D Projects of Jiangxi Province (20243BBG71024), Natural Science Foundation of Jiangsu Province (BK20243005) and Jiangxi Province Ganpo Juncai Support Program-Training Program for Academic and Technical Leaders in Major Disciplines (20232BCJ23093) and Natural Science Foundation of Shanghai (23ZR1415500).

语种：英文

外文关键词：Strengthening; Mg alloys; gradient structure; texture; twinning

摘要：Considerable efforts have been made to prepare a thicker gradient layer, while the reported thickness of the gradient layer for Mg alloys is often below 700 mu m. In this study, an ultrasonic surface rolling process (USRP) was employed to fabricate gradient layers in AZ31 hot-rolled plates. By changing the initial texture of the c-axes of the grains from a direction largely parallel to the compression direction of the USRP into that perpendicular to the compression direction, the thickness of the gradient layer obtained by the USRP at a static force of 140 N increased from approximately 500 mu m to 2000 mu m. This in turn doubled the strengthening effect of the gradient layer under tension along the rolling direction of the plates, without compromising the ductility. Further investigations revealed that extending the gradient layer by tailoring its initial texture is closely related to the activation of profuse {1012} twinning.