热轧Mg97Zn1Y2合金板材组织和力学性能的研究  

Study on Microstructure and Mechanical Properties of Hot Rolled Mg97Zn1Y2 Alloy Sheet

作　　者：何思航 陈韬 邵建波 刘窈伶 陈志永[1] 刘楚明[1] 

机构地区：[1]中南大学材料科学与工程学院

出　　处：《热加工工艺》2018年第1期38-40,48,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51574291);国家“973”项目子课题资助项目(2013CB632202)

摘　　要：采用X射线衍射、扫描电子显微镜、透射电子显微镜和室温拉伸等方法,研究了总压下量分别为25%和50%的热轧Mg97Zn1Y2（at%）合金板显微组织以及力学性能。结果表明：轧制过程中,具有14H长周期堆垛结构（LPSO）的Mg12ZnY相发生了扭折变形。随着轧制变形量的增大,LPSO相扭折变形程度增大。同时,轧制变形量较大的合金板材具有较强的基面织构,较高的抗拉强度和较好的塑性。The microstructure and mechanical properties of hot rolled Mg97Zn1Y2（at%） alloy sheet with 25% and 50% overall reductions were investigated by using X-ray diffraction, scanning electron microscopy, transmission electron microscopy and tensile testing method. The results show that in the rolling process, the kink deformation happens in Mg97Zn1Y2 phase with 14H long period stacking structure （LPSO）. With the increase of rolling deformation, LPSO kink deformation degree increases, Meanwhile, the alloy sheet with larger rolling deformation has strong basal texture, high tensile strength and good ductility.

关 键 词：Mg97Zn1Y2合金 轧制 显微组织 力学性能 

分 类 号：TG335.11[金属学及工艺—金属压力加工] TG146.2[一般工业技术—材料科学与工程]