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Effect of morphology of long period stacking ordered phase on mechanical properties of Mg-10Gd-1Zn-0.5Zr magnesium alloy

机译：长期堆积有序相的形貌对Mg-10Gd-1Zn-0.5Zr镁合金力学性能的影响

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摘要

The effect of morphology of long period stacking ordered (LPSO) phases on the mechanical properties of Mg-10Gd-1Zn-0.52r (wt%) alloy is investigated in this study. Three solution treatment processes are carried out on the alloy for obtained various morphologies of LPSO phases. The block LPSO phases, lamellar LPSO phases and no LPSO phase are observed after the solution treatments. The mechanical properties of the alloys in solution-treated and peak-aged conditions are tested. In the solution-treated condition, the block LPSO phases along grain boundaries have little influence on the mechanical properties, while the lamellar LPSO phases within the matrix decrease the ductility. In the peak-aged condition, the alloy with block LPSO phases shows the best tensile properties: ultimate tensile strength of 303.5 MPa and elongation of 7.7%. The results indicate that the interaction between LPSO phase and predominant strengthening beta' phase has a great influence on the mechanical properties of the alloy.
机译：研究了长期堆积有序（LPSO）相的形态对Mg-10Gd-1Zn-0.52r（wt％）合金力学性能的影响。对合金进行了三种固溶处理工艺，以获得各种形态的LPSO相。固溶处理后未观察到嵌段LPSO相，层状LPSO相和无LPSO相。测试了合金在固溶处理和峰值时效条件下的机械性能。在固溶处理条件下，沿晶界的嵌段LPSO相对机械性能的影响很小，而基体内的层状LPSO相则降低了延展性。在峰值时效状态下，具有嵌段LPSO相的合金表现出最佳的拉伸性能：极限拉伸强度为303.5 MPa，伸长率为7.7％。结果表明，LPSO相和主要的强化β'相之间的相互作用对合金的力学性能有很大的影响。

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  • 来源
    《Materials Science and Engineering》 |2018年第30期|64-68|共5页
  • 作者

    Wu Xia; Pan Fusheng; Cheng Renju; Luo Shuqing;

  • 作者单位

    Chongqing Univ Coll Mat Sci & Engn Chongqing 400044 Peoples R China|Chongqing Acad Sci & Technol Chongqing 401123 Peoples R China;

    Chongqing Univ Coll Mat Sci & Engn Chongqing 400044 Peoples R China|Chongqing Acad Sci & Technol Chongqing 401123 Peoples R China|Chongqing Univ Natl Magnesium Alloy Mat Engn Technol Res Ctr Chongqing 400044 Peoples R China;

    Chongqing Acad Sci & Technol Chongqing 401123 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Mg-Gd-Zn alloy; Heat treatment; LPSO phase; Microstructure; Mechanical properties;

    机译：Mg-Gd-Zn合金;热处理;LPSO阶段;微观结构机械性能;

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