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首页> 外文期刊>Materials Science and Engineering >Effect of minor Er and Zr on microstructure and mechanical properties of Al-Mg-Mn alloy (5083) welded joints
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Effect of minor Er and Zr on microstructure and mechanical properties of Al-Mg-Mn alloy (5083) welded joints

机译：微量Er和Zr对Al-Mg-Mn合金（5083）焊接接头组织和力学性能的影响

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摘要

Samples of Al-Mg-Mn and Al-Mg-Mn-Er-Zr alloys were welded using the method of laser welding. The influence of Er and Zr on microstructure, microhardness and mechanical properties of the Al-Mg-Mn alloy welded joints were investigated. It has been found that addition of Er and Zr refines the grain size in the fusion zone, due to the formation of primary Al_3Zr and Al_3Er. Fine equiaxed grains are dominated near the fusion boundary of the Al-Mg-Mn-Er-Zr alloy joint, which is contrary with the columnar crystal in the Al-Mg-Mn alloy joint. Microhardness of the center of the fusion zone rises from 74HV_(0.1) to 84HV_(0.1) owing to the grain refinement by Er and Zr. The tensile test result shows that the ultimate tensile strength and yield strength are improved by adding Er and Zr. The main reason for this is related to grain refining strengthening.
机译：使用激光焊接方法焊接Al-Mg-Mn和Al-Mg-Mn-Er-Zr合金样品。研究了Er和Zr对Al-Mg-Mn合金焊接接头组织，显微硬度和力学性能的影响。已经发现，由于形成了初级Al_3Zr和Al_3Er，添加Er和Zr使熔合区的晶粒尺寸细化。在Al-Mg-Mn-Er-Zr合金接头的熔合边界附近，细小的等轴晶占主导地位，这与Al-Mg-Mn合金接头中的柱状晶体相反。由于Er和Zr对晶粒的细化，熔合区中心的显微硬度从74HV_（0.1）提高到84HV_（0.1）。拉伸试验结果表明，通过添加Er和Zr提高了极限拉伸强度和屈服强度。主要原因是与晶粒细化强化有关。

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  • 来源
    《Materials Science and Engineering》 |2013年第20期|226-231|共6页
  • 作者

    Yang dongxia; Li xiaoyan; He dingyong; Huang hui;

  • 作者单位

    Department of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China;

    Department of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China;

    Department of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China;

    Department of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China;

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

    Al-Mg-Mn alloy; erbium; zirconium; grain refinement; laser welding;

    机译：Al-Mg-Mn合金;铒;锆;晶粒细化激光焊接;

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