Influence of different extrusion processes on mechanical properties of magnesium alloy  

作　　者：Qingshan Yang Bin Jiang Hucheng Pan Bo Song Zhongtao Jiang Jiahong Dai Lifei Wang Fusheng Pan 

机构地区：[1]Chongqing Academy of Science and Technology,Chongqing 401123,China [2]National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China [3]Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education),Northeastern University,Shenyang 110004,Liaoning Province,China [4]Faculty of Materials and Energy,Southwest University,Chongqing 400715,China

出　　处：《Journal of Magnesium and Alloys》2014年第3期220-224,共5页镁合金学报（英文）

基　　金：The authors are grateful for the financial supports from Chongqing Science and Technology Commission(CSTC2012JJJQ50001,CSTC2012GGB50003,CSTC2013 JCYJC60001);Youth Foundation of Chongqing academy of Science and Technology(2013CSTC-JBKY-00111);National Natural Science Foundation of China(51171212,51474043).

摘　　要：AZ31 Mg alloy sheets were processed by the conventional symmetrical extrusion(CSE)and the asymmetric extrusion(ASE).Progressive-asymmetric extrusion(PASE)and severe strain-asymmetric extrusion(SASE)were employed for ASE processes.The texture at near-surface and mid-layer zones of ASE sheets was diverse penetrating the normal direction(ND).This was attributed to an additional asymmetric shear strain deformation during the ASE process.(0002)basal planes of PASE sheets tilt to the shear deformation direction.Meanwhile,the basal texture intensity of PASE sheets has been weakened compared with one in CSE sheets.Grain refinement and tilted weak basal texture obtained by SASE process dramatically enhances the room temperature strength and plasticity of the extruded AZ31 magnesium alloy sheets.The microstructure and mechanical responses were examined and discussed.

关 键 词：Mg alloys TEXTURE MICROSTRUCTURE EXTRUSION SHEAR 

分 类 号：TG1[金属学及工艺—金属学]