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Microstructure, electromagnetic shielding effectiveness and mechanical properties of Mg-Zn-Cu-Zr alloys

机译：Mg-Zn-Cu-Zr合金的组织，电磁屏蔽效能和力学性能

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摘要

The microstructure, electromagnetic interference (EMI) shieldingeffectiveness (SE) and mechanical properties of Mg-Zn-xCu-Zr alloys (x = 0-2.32 wt.%) were investigated in this study. The results indicated that the addition of Cu led to the formation of MgZnCu phase with a face-center cubic structure, and resulted in grain refinement. EMI SE increased significantly with increasing Cu content in extruded state. The alloy with 2.32 wt.% Cu exhibited optimal EMI shielding capacity with SE value of 84-117 dB. Meanwhile, it was found that good mechanical properties could be achieved by adding low Cu content. The extruded alloy with 0.37 wt.% Cu presented higher yield strength (276 MPa), ultimate tensile strength (346 MPa) and elongation (δ = 11.4%) compared with other extruded alloys. However, a higher Cu content would substantially deteriorate tensile properties of the alloys. Based on microstructure observation, the variation of EMI shielding capacity and mechanical properties have been discussed.
机译：本研究研究了Mg-Zn-xCu-Zr合金（x = 0-2.32 wt。％）的微观结构，电磁干扰（EMI）屏蔽效能（SE）和机械性能。结果表明，Cu的添加导致形成具有面心立方结构的MgZnCu相，并导致晶粒细化。 EMI SE随着挤压态Cu含量的增加而显着增加。具有2.32 wt。％Cu的合金表现出最佳的EMI屏蔽能力，SE值为84-117 dB。同时，发现通过添加低的Cu含量可以实现良好的机械性能。与其他挤压合金相比，含0.37 wt。％Cu的挤压合金具有更高的屈服强度（276 MPa），极限抗拉强度（346 MPa）和伸长率（δ= 11.4％）。然而，较高的Cu含量将显着降低合金的拉伸性能。基于微结构观察，讨论了EMI屏蔽能力和机械性能的变化。

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  • 来源
    《Materials Science and Engineering》 |2015年第7期|67-74|共8页
  • 作者

    Xianhua Chen; Lizi Liu; Fusheng Pan; Jianjun Mao; Xiaoyang Xu; Tao Yan;

  • 作者单位

    College of Materials Science and Engineering, Chongqing University. Chongqing 400045, PR China,National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, PR China;

    College of Materials Science and Engineering, Chongqing University. Chongqing 400045, PR China;

    College of Materials Science and Engineering, Chongqing University. Chongqing 400045, PR China,National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, PR China,Chongqing Academy of Science and Technology, Chongqing 401123, PR China;

    College of Materials Science and Engineering, Chongqing University. Chongqing 400045, PR China;

    College of Materials Science and Engineering, Chongqing University. Chongqing 400045, PR China;

    College of Materials Science and Engineering, Chongqing University. Chongqing 400045, PR China;

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

    Mg-Zn-Cu-Zr; Microstructure; Electromagnetic shielding effectiveness; Mechanical properties;

    机译：Mg-Zn-Cu-Zr;微观结构电磁屏蔽效果;机械性能;

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