Effects of annealing treatment on microstructure and tensile behavior of the Mg-Zn-Y-Nd alloy

作     者：L.Y.Sheng B.N.Du Z.Y.Hu Y.X.Qiao Z.P.Xiao B.J.Wang D.K.Xu Y.F.Zheng T.F.Xi L.Y.Sheng;B.N.Du;Z.Y.Hu;Y.X.Qiao;Z.P.Xiao;B.J.Wang;D.K.Xu;Y.F.Zheng;T.F.Xi

作者机构：Shenzhen InstitutePeking UniversityShenzhen 518057China Jiangsu University of Science and TechnologyZhenjiang 212003China Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China dShenzhen Yezhan Electronics Co.LtdShenzhen 518110China 

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

年 卷 期：2020年第8卷第3期

页      面：601-613页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 080201[工学-机械制造及其自动化] 

基　　金：The authors are grateful to the financial support from Natural Science Foundation of Guangdong Province,China(No.2018A030313950) Shenzhen Basic Research Project(JCYJ20170815153143221,and JCYJ20170815153210359,JCYJ20170306141749970) 

主　　题：Annealing treatment Mg-Zn-Y-Nd alloy Microstructure Tensile property 

摘      要：In the present study,the Mg-4Zn-0.6Y-0.5Nd alloy was hot extruded and annealed at 200℃,225℃ and 250℃ for different time to optimize microstructure and mechanical *** results exhibit that the dual-size grain structure and linearly distributed secondary phase are the main feature of the as-extruded Mg-Zn-Y-Nd alloy,which can be described as the elongated grain is surrounded by the fine equiaxed ***,the as-extruded alloy shows strong{011^(-)0}fiber texture feature,especially for the large elongated *** annealing treatment results in static recrystallization,which increases fine equiaxed grains but decreases large elongated *** addition,the equiaxed grains formed during the annealing treatment demonstrate relative random orientations,which weaken the{011^(-)0}fiber texture of the ***,during the annealing at 225℃and 250℃,the extension twins begin to form in the alloy and weaken the{011^(-)0}fiber texture of the alloy *** annealing treatment has little influence on the linearly distributed secondary phase but promotes the coarsening of small precipitates at 250℃.The annealing treatment could increase the yield and ultimate strength,but the elongation decreases,especially at higher *** a variation can be ascribed to the evolution of texture,grain structure,twinning and precipitation during the annealing treatment.