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首页> 外文期刊>Journal of Materials Research >Effect of Zn addition on microstructure and mechanical properties of Mg-9Gd-3Y-0.5Zr alloy
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Effect of Zn addition on microstructure and mechanical properties of Mg-9Gd-3Y-0.5Zr alloy

机译：添加锌对Mg-9Gd-3Y-0.5Zr合金组织和力学性能的影响

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摘要

A comparison of microstructure, mechanical properties and fracture behavior of Mg-9Gd-3Y-xZn-0.5Zr (x = 0, 0.2, 0.5, 1.0, and 1.5) (wt%) alloys under different thermal treatment conditions was investigated in this study. The results showed that the as-cast alloys were comprised of Mg matrix, eutectic compounds and cuboid-shaped phases. The eutectics were Mg-24(Gd, Y)(5) in the alloys of Zn content 0.2 wt%, while (Mg, Zn)(3)RE in the other three alloys. Fine lamellar long period stacking ordered structure formed inside of matrix of the as-cast Zn-containing alloys and its quantity increases with raising Zn content. Mg-12(Gd, Y)Zn was observed at grain boundary of Mg matrix after solution treatment in the alloys of Zn content 0.5 wt%. Peak-aged Mg-9Gd-3Y-0.5Zn-0.5Zr alloy exhibited a desirable combination of strength and elongation with 244 MPa in yield strength, 371 MPa in ultimate tensile strength and 3.8% in EL. Meanwhile, the fracture behavior of the studied alloys was also investigated.
机译：研究了Mg-9Gd-3Y-xZn-0.5Zr（x = 0、0.2、0.5、1.0和1.5）（wt％）合金在不同热处理条件下的组织，力学性能和断裂行为的比较。结果表明，铸态合金由镁基体，共晶化合物和长方体相组成。 Zn含量为0.2 wt％的合金中的共晶为Mg-24（Gd，Y）（5），而其他三种合金中的（Mg，Zn）（3）RE为共晶。铸态含锌合金基体内部形成细细的层状长周期堆积有序结构，其含量随着锌含量的增加而增加。 Zn含量为0.5 wt％的合金固溶处理后，在Mg基体的晶界处观察到Mg-12（Gd，Y）Zn。峰值时效Mg-9Gd-3Y-0.5Zn-0.5Zr合金表现出理想的强度和伸长率组合，屈服强度为244 MPa，极限抗拉强度为371 MPa，EL为3.8％。同时，还研究了所研究合金的断裂行为。

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  • 来源
    《Journal of Materials Research》 |2018年第6期|733-744|共12页
  • 作者

    Cui Wendong; Xiao Lv; Liu Wencai; Wu Guohua; Wang Xianfei; Li Zhongquan;

  • 作者单位

    Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China;

    Shanghai Spaceflight Precis Machinery Inst, Shanghai 201600, Peoples R China;

    Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China;

    Shanghai Spaceflight Precis Machinery Inst, Shanghai 201600, Peoples R China;

    Shanghai Spaceflight Precis Machinery Inst, Shanghai 201600, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Zn; Mg-9Gd-3Y-0; 5Zr alloy; microstructure; mechanical property; fracture behavior;

    机译：锌;Mg-9Gd-3Y-0;5Zr合金;组织;力学性能;断裂行为;

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