Texture tailoring and bendability improvement of rolled AZ31 alloy using {10-12} twinning: The effect of precompression levels  

作　　者：Jong Un Lee Ye Jin Kim Sang-Hoon Kim Jeong Hun Lee Min-Seong Kim Shi-Hoon Choi Byoung Gi Moon Young Min Kim Sung Hyuk Park 

机构地区：[1]School of Materials Science and Engineering,Kyungpook National University,Daegu 41566,Republic of Korea [2]Ulsan Regional Division,Korea Institute of Industrial Technology,Ulsan 44413,Republic of Korea [3]Department of Printed Electronics Engineering,Sunchon National University,Suncheon,Jeonnam 57922,Republic of Korea [4]Implementation Research Division,Korea Institute of Materials Science,Changwon 51508,Republic of Korea

出　　处：《Journal of Magnesium and Alloys》2019年第4期648-660,共13页镁合金学报（英文）

基　　金：This work was supported by a National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIP,South Korea)(No.2019R1A2C1085272);the R&D Center for Valuable Recycling(Global-Top R&BD Program)of the Ministry of Environment of Korea(No.2016002220003).

摘　　要：In this study,the texture of a rolled Mg alloy is effectively modified through the application of precompression and subsequent annealing treatment,leading to a remarkable improvement in the bending formability of the alloy at room temperature.Precompression induces lattice reorientation through{10-12}twinning,and annealing treatment reduces the stored strain energy of the precompressed material,which results in the formation of a stable grain structure with two dominant texture components.With an increase in precompression,the tensile strain in the outer region of the bending samples is accommodated to a greater extent due to more pronounced{10-12}twinning and basal slip.As a result,the bending formability of the material at room temperature improves with greater precompression.The variation in microstructure,texture,and bending behavior in relation to the degree of precompression is discussed in detail.

关 键 词：Magnesium Bending FORMABILITY TWINNING TEXTURE 

分 类 号：TG1[金属学及工艺—金属学]