Effects of icosahedral phase on mechanical anisotropy of as-extruded Mg-14Li (in wt%) based alloys

作     者：Chuanqiang Li Daokui Xu Baojie Wang Liyuan Sheng Ruizhi Wu Enhou Han 

作者机构：Peking UniversityShenzhen InstituteShenzhen Key Lab Human Tissue Regenerate&RepairShenzhen 518057China Key Laboratory of Nuclear Materials and Safety AssessmentInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006China School of Environmental and Chemical EngineeringShenyang Ligong UniversityShenyang 110159China Key Laboratory of Superlight Materials&Surface TechnologyMinistry of EducationHarbin Engineering UniversityHarbin 150001China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2019年第35卷第11期

页      面：2477-2484页

核心收录：

学科分类：0817[工学-化学工程与技术] 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）] 0702[理学-物理学] 

基　　金：supported financially by the Strategic New Industry Development Special Foundation of Shenzhen (No. JCYJ20170306141749970) the National Natural Science Foundation of China (Nos.51871211 and 51701129) the Natural Science Foundation of Guangdong Province (No.2018A030313950) the funds of International Joint Laboratory for Light Alloys,the National Key Research and Development Program of China (Nos. 2017YFB0702001 and 2016YFB0301105) Liaoning BaiQianWan Talents Program the Innovation Fund of Institute of Metal Research (IMR),Chinese Academy of Sciences (CAS) 

主　　题：Mg-Li alloys Texture I-phase Mechanical anisotropy Fracture 

摘      要：Through investigating and comparing microstructure and crystallographic texture of as-extruded Mg-14Li and Mg-14Li-6Zn-1Y(in wt%)alloys,the differences in their mechanical anisotropy were *** revealed that the formation of I-phase(Mg3Zn6Y,icosahedral structure)can effectively refine grain ***,compared with Mg-14Li alloy,the texture type of Mg-14Li-6Zn-1Y alloy changed slightly,but its texture intensity decreased *** a result,the stronger texture contributed to thenormalmechanical anisotropy of Mg-14Li alloy with higher tensile strength and a lower elongation ratio along transverse direction(TD)than those along extrusion direction(ED).However,for Mg-14Li-6Zn-1Y alloy,the zonal distribution of I-phase particles along ED causedabnormalmechanical anisotropy,*** tensile strength and better plasticity along ED.