热挤压对Mg-6Zn-0.8Zr-1.5Nd-0.5Cu合金微观组织及力学性能的影响  

Effect of Hot Extrusion on Microstructure and Mechanical Properties of Mg-6Zn-0.8Zr-1.5Nd-0.5Cu Alloy

作　　者：王学娟 韩振华[2] 孙劲松 张长军[1] 杨军[3] 宋景波 WANG Xuejuan;HAN Zhenhua;SUN Jinsong;ZHANG Changjun;YANG Jun;SONG Jingbo(School of Materials Science and Engineering, Chang＇an University, Xi＇an 710064, China;School of Materials Science and Engineering, Xi＇an University of Technology, Xi＇an 710048, China;Chuan-Qing Drilling Engineering Company Limited of Changqing Down-hole Operation Company, CNPC, Xi＇an 710021, China;CSIC No.12 Research Institute, Xingping 713102, China)

机构地区：[1]长安大学材料科学与工程学院,陕西西安710064 [2]西安理工大学材料科学与工程学院,陕西西安710048 [3]中国石油天然气集团公司川庆钻探工程有限公司长庆井下技术作业公司,陕西西安710021 [4]中国船舶重工集团公司第十二研究所,陕西兴平713102

出　　处：《热加工工艺》2018年第8期53-55,共3页Hot Working Technology

基　　金：陕西省科技统筹创新工程计划项目(2016KTZDGY09-06-02);陕西省自然科学基础研究计划项目(2015JQ5169);陕西省教育厅专项科研计划项目(14JK1533)

摘　　要：对Mg-6Zn-0.8Zr-1.5Nd-0.5Cu合金铸态及挤压态的组织、力学性能进行研究。结果表明：热挤压后合金的微观形貌由铸态时等轴晶状变为沿挤压方向的长条状,并在晶界处伴有黑色析出相。热挤压后合金的力学性能得到提高,抗拉强度和屈服强度分别提高到302、292 MPa;抗压强度和压缩屈服强度分别达到485、357 MPa。The microstructure and mechanical properties of Mg-6Zn-0.8Zr-1.5Nd-0.5Cu alloy as cast and extruded were investigated. The results show that the morphology of the alloy after extrusion changes from equiaxed grains as cast to strip gr ain distributing along the extrusion direction. The black precipitated phases appear along the grain boundary. The mechanical properties of the alloy after hot extrusion improves. The tensile strength and yield strength increase to 302 MPa and 292 MPa, respectively. The compressive strength and compressing yield strength increase to 485 MPa and 357 MPa, respectively.

关 键 词：Mg-6Zn-0.8Zr-1.5Nd-0.5Cu合金 热挤压 微观组织 力学性能 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG379[金属学及工艺—金属材料]