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首页> 外文期刊>Materials Science and Engineering >Microstructure, texture, mechanical properties and electromagnetic shielding effectiveness of Mg-Zn-Zr-Ce alloys
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Microstructure, texture, mechanical properties and electromagnetic shielding effectiveness of Mg-Zn-Zr-Ce alloys

机译：Mg-Zn-Zr-Ce合金的组织，织构，力学性能和电磁屏蔽效能

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摘要

The microstructure, dynamic recrystallization, texture, anisotropic behaviour, mechanical properties and electromagnetic shielding effectiveness of Mg-Zn-Zr-Ce alloys were comprehensively investigated in this study. Results indicated that the addition of Ce refined the grains and induced the formation of a Mg-Zn-Ce phase with a unique orthorhombic structure. Dynamic recrystallization was improved when Ce was added because the particle stimulated nucleation mechanism. The random orientation of recrystallization grains weakened the basal texture. The anisotropy index decreased from 1.02 to 0.43 after 1.16 wt% Ce was added. Ce addition enhanced the mechanical properties when the Ce content ranged from 0 to 1.90 wt%, and then decreased with a higher 2.74 wt% Ce content. Electromagnetic shielding effectiveness was also improved initially with the addition of Ce, and then decreased, but was still higher compared with the Ce-free alloy. Good mechanical properties and excellent electromagnetic shielding properties were simultaneously achieved through 1.16 wt% Ce addition. The alloy not only exhibited good yield strength (249 MPa), ultimate tensile strength (316 MPa), and elongation (δ=15%) but also superior electromagnetic shielding effectiveness with 71 dB at 1200 MHz.
机译：本文对Mg-Zn-Zr-Ce合金的组织，动态再结晶，织构，各向异性行为，力学性能和电磁屏蔽效能进行了综合研究。结果表明，铈的加入使晶粒细化并诱导了具有独特斜方晶结构的Mg-Zn-Ce相的形成。加入Ce可以改善动态重结晶，因为颗粒促进了成核机理。再结晶晶粒的无规取向削弱了基础组织。添加1.16wt％的Ce后，各向异性指数从1.02降低到0.43。当Ce含量在0至1.90 wt％范围内时，Ce的添加增强了机械性能，然后随着Ce含量的2.74 wt％的增加而降低。电磁屏蔽效果最初通过添加Ce得以改善，然后下降，但与不含Ce的合金相比仍更高。通过添加1.16重量％的铈，同时获得了良好的机械性能和优异的电磁屏蔽性能。该合金不仅表现出良好的屈服强度（249 MPa），极限抗拉强度（316 MPa）和伸长率（δ= 15％），而且在1200 MHz时具有71 dB的优异电磁屏蔽效果。

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  • 来源
    《Materials Science and Engineering》 |2016年第4期|259-268|共10页
  • 作者

    Lizi Liu; Xianhua Chen; Fusheng Pan; Aitao Tang; Xiaolong Wang; Juan Liu; Shangyu Gao;

  • 作者单位

    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;

    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 ,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;

    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
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  • 关键词

    Mg-Zn-Zr-Ce alloy; Microstructure; Texture; Mechanical properties; Electromagnetic shielding effectiveness;

    机译：Mg-Zn-Zr-Ce合金;微观结构质地;机械性能电磁屏蔽效能;

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