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The investigation of Y doping content effect on the microstructure and microhardness of tungsten materials

机译:Y掺杂量对钨材料组织和硬度的影响

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摘要

In this study, the microstructure and microhardness of tungsten-yttrium (W-Y) composites were investigated as a function of Y doping content (0.25-3 wt%). It was found that the crystallite sizes and the powder particle sizes were increased as a result of the increase of Y content. Nearly fully dense materials were obtained for W-Y alloys when the Y content was higher than 0.5 wt%. The EDS analysis revealed that the Y rich phases were complex (W-Y) oxides formed during the sintering process. The Y doping content showed obvious influence on the refinement of tungsten grains during sintering. W-1.5Y composite showed the finest microstructure with an average grain size of 0.32 μm, and thus achieved the highest Vickers microhardness with the value of 770 HV_(0.2).
机译:在这项研究中,研究了钨-钇(W-Y)复合材料的微观结构和显微硬度与Y掺杂含量(0.25-3 wt%)的关系。发现随着Y含量的增加,微晶尺寸和粉末颗粒尺寸增加。当Y含量高于0.5wt%时,获得了几乎完全致密的W-Y合金材料。 EDS分析表明,富Y相是在烧结过程中形成的复杂(W-Y)氧化物。 Y掺杂量对烧结过程中钨晶粒细化有明显影响。 W-1.5Y复合材料显示出最佳的微观组织,平均晶粒尺寸为0.32μm,因此获得了最高的维氏显微硬度,值为770 HV_(0.2)。

著录项

  • 来源
    《Materials Science and Engineering》 |2014年第17期|572-577|共6页
  • 作者单位

    School of Materials Science and Engineering, University of Science and Technology, Beijing, Beijing 100083, China;

    School of Materials Science and Engineering, University of Science and Technology, Beijing, Beijing 100083, China,Laboratory of Special Ceramics and Powder Metallurgy, School of Materials Science and Engineering, University of Science & Technology Beijing, Beijing 100083, PR China;

    School of Materials Science and Engineering, University of Science and Technology, Beijing, Beijing 100083, China;

    School of Materials Science and Engineering, University of Science and Technology, Beijing, Beijing 100083, China;

    School of Materials Science and Engineering, University of Science and Technology, Beijing, Beijing 100083, China;

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

    Tungsten; Yttrium; Microstructure; Microhardness;

    机译:钨;钇;微观结构显微硬度;

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