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首页> 外文期刊>Materials Science and Engineering >Study of Mg-Ymm-Zn alloys with high-strength at elevated temperatures processed by water-cooled mold casting
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Study of Mg-Ymm-Zn alloys with high-strength at elevated temperatures processed by water-cooled mold casting

机译：水冷铸模高温加工高强度Mg-Ymm-Zn合金的研究

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摘要

The high quality Mg-xYmm (x=6, 9, 12)-4Zn (Ymm=Y-rich misch metal, wt%) alloy ingots with diameter of 90-95 mm and length of 600 mm were successfully fabricated by water-cooled mold casting, and the microstructure and tensile properties have been investigated. The results demonstrated that the alloys contained four secondary phases: a plenty of 18R LPSO and 14H LPSO phases and a few of Mg_3Zn_3RE_2 and Mg_(24)Y_5-type compounds. The ultimate tensile strength of Mg-12Ymm-4Zn alloy could keep above 130 MPa until 400 ℃. The excellent high-temperature strength was mainly attributed to dense LPSO lamellae strengthening Mg matrix and network-like LPSO phase reinforcing grain boundaries.
机译：通过水冷成功地制造了直径为90-95 mm，长度为600 mm的高质量Mg-xYmm（x = 6，9，12）-4Zn（Ymm =富Y的混合稀土，wt％）合金锭铸模，并研究了显微组织和拉伸性能。结果表明，该合金包含四个次生相：大量的18R LPSO和14H LPSO相以及一些Mg_3Zn_3RE_2和Mg_（24）Y_5型化合物。 Mg-12Ymm-4Zn合金的极限抗拉强度可以保持在130 MPa以上，直至400℃。优异的高温强度主要归因于致密的LPSO片状增强Mg基质和网络状LPSO相增强的晶界。

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  • 来源
    《Materials Science and Engineering》 |2014年第29期|139-144|共6页
  • 作者

    Jinghuai Zhang; Longjiang Xu; Yufeng Jiao; Chi Xu; Li Zhang; Shujuan Liu; Jian Meng; Ruizhi Wu; Milin Zhang;

  • 作者单位

    Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;

    Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;

    Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China,College of Materials Science and Engineering, Jiamusi University, Jiamusi 154007, China;

    Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;

    Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;

    Department of Materials Physics and Chemistry, Harbin Institute of Technology, Harbin 150001, China;

    State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;

    Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;

    Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Mg alloys; Microstructure; Tensile properties; Long period stacking ordered (LPSO); structure;

    机译：镁合金微观结构拉伸性能;长期堆放命令（LPSO）;结构体;

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