累积叠轧工艺对Mg-Gd-Ni镁合金微观形貌及力学性能的影响  

Effect of Accumulative Roll-Bonding Process on Microstructure and Mechanical Properties of Mg-Gd-Ni Magnesium Alloy

作　　者：刘逸馨 韩振华[2] 杨军[3] 梁山 张长军[1] LIU Yixin;HAN Zhenhua;YANG Jun;LIANG Shan;ZHANG Changjun(School of Material Science and Engineering,Chang'an University,Xi'an 710064,China;School of Material Science and Engineering,Xi'an University of Technology,Xi'an 710048,China;Changqing Down-hole Technical Operation Company,CNPC Chuan-Qing Drilling Engineering Company Limited,Xi'an 710021,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

出　　处：《热加工工艺》2019年第5期30-32,37,共4页Hot Working Technology

基　　金：陕西省科技统筹创新工程计划项目(2016KTZDGY09-06-02);陕西省重点研发计划项目[2018ZDXM-GY-123];陕西省教育厅专项科研计划项目(14JK1533)

摘　　要：为了改善铸态Mg-Gd-Ni合金力学性能,提高其轧制成形能力,研究了累积叠轧工艺对Mg-Gd-Ni合金力学性能的影响。结果表明:累积叠轧工艺对Mg-Gd-Ni合金的组织结构及力学性能产生显著影响,破碎了Mg-Gd-Ni合金中的第二相—LPSO相,使其在合金中的分布更加均匀有序,提高合金强度。累积叠轧后合金产生了大的塑性变形,组织晶粒明显细化,使镁合金的综合力学性能得到显著提升。In order to improve the mechanical properties and rolling forming ability of as-cast Mg-Gd-Ni alloy,the effect of accumulative roll-bonding process on the mechanical properties of Mg-Gd-Ni alloy was studied.The results show that the cumulative roll-bonding process has a significant effect on the microstructure and mechanical properties of Mg-Gd-Ni alloy,it breaks the second phase-LPSO phase in Mg-Gd-Ni alloy,making its distribution in the alloy more uniform and ordered,and improvs the strength of the alloy.The cumulative roll-bonding produces a large plastic deformation,and the microstructure is refined obviously,which improves the comprehensive mechanical properties of magnesium alloy.

关 键 词：LPSO相 Mg-Gd-Ni镁合金 累积叠轧 

分 类 号：TG335.19[金属学及工艺—金属压力加工]