Deformation mechanism,orientation evolution and mechanical properties of annealed cross-rolled Mg-Zn-Zr-Y-Gd sheet during tension

作     者：Xia Lin Zhiyong Chen Jianbo Shao Jiangying Xiong Zhang Hu Chuming Liu 

作者机构：School of Materials Science and EngineeringCentral South UniversityChangsha 410083China 

出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)

年 卷 期：2023年第11卷第7期

页      面：2340-2350页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the financial support from the National Natural Science Foundation of China(NSFC)with projects Nos.51874367 51574291 

主　　题：Magnesium alloys Deformation mechanism Orientation evolution Mechanical properties 

摘      要：Mg-6.75Zn-0.57Zr-0.4Y-0.18Gd(wt.%)sheet with typical basal texture was produced by cross rolling and *** temperature tensile tests were subsequently conducted along rolling direction(RD),transverse direction(TD),and diagonal direction(RD45).Deformation mechanism and orientation evolution during the tension were investigated by quasi-in-situ electron backscatter diffraction observation and in-grain misorientation axis *** results indicate that the activation of deformation mechanism mainly depends on the initial grain *** RD sample,prismaticslip plays an important role in the deformation of grains withaxis nearly perpendicular to the *** theaxis gradually tilted towards the RD,basalslip becomes the dominant deformation *** the tensile fracture,the initial concentrically distributed{0001}pole is split into double peaks extending perpendicular to the RD,and the randomly distributed{1010}pole becomes parallel to the *** evolution in{0001}and{1010}poles during tension is related to the lattice rotation induced by basalslip and prismaticslip,*** and RD45 samples exhibit similar deformation mechanism and orientation evolution as the RD sample,which results in the nearly isotropic mechanical properties in the annealed cross-rolled sheet.