Effects of trace Gd concentration on texture and mechanical properties of hot-rolled Mg-2Zn-xGd sheets  

作　　者：Hong Yan Rongshi Chen Nan Zheng Jun Luo Shigeharu Kamado Enhou Han 

机构地区：[1]State Key Laboratory for Corrosion and Protections,Institute of Metal Research,Chinese Academy of Sciences,62 Wencui Road,Shenyang 110015,China [2]Department of Mechanical Engineering,Nagaoka University of Technology,Nagaoka 940-2188,Japan

出　　处：《Journal of Magnesium and Alloys》2013年第1期23-30,共8页镁合金学报（英文）

基　　金：The work described in this paper was funded by China 973 program(2013CB632202).

摘　　要：The effects of Gd concentration(0.1,0.3,0.7 wt%)on the microstructure,texture and mechanical properties of rolled and annealed Mg-2Zn-xGd sheets have been investigated aiming to develop low cost and high ductile Mg-Zn-Gd sheets.Dynamic recrystallization,static recrystallization and grain growth during hot rolling process and annealing process were delayed with increase of Gd concentration,leading to fine grain microstructure.The rolled 0.1 wt%Gd sheet showed strong basal texture which remained stable after annealing process and exhibited medium elongation of about 25%.In contrast,the rolled 0.3 wt%Gd sheet had weak basal texture which transformed to non-basal texture with double peaks tilted about±48°to the transverse direction due to the static recrystallization during annealing process.Consequently,the annealed sheets exhibited higher elongation of 40%along the rolling direction and 50%along the transverse direction due to the existence of non-basal texture.It is suggested that the minimum effective concentration for texture randomization in the Mg-2Zn-xGd alloy is about 0.3 wt%.

关 键 词：Magnesium alloys Rolling sheet TEXTURE DUCTILITY 

分 类 号：TG1[金属学及工艺—金属学]