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Mechanical alloying of ODS tungsten heavy alloys and microstructure development of intermetallic compounds

机译：ODS钨重合金的机械合金化及金属间化合物的组织发展。

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摘要

Oxide dispersion strengthened tungsten heavy alloys have been used in a wide variety of industrial and military applications due to their high density, strength and stiffness. These alloys have been produced by mechanical alloying, which can provide uniform distribution of nano-oxide particles and an extremely fine grain structure, resulting in the reduction of the sintering temperature. However, the high-energy ball-milling process could introduce iron contamination from the vial and milling media during the procedure. In this study, the W-Ni-Y2O3 alloy was investigated as a function of milling time. The results show that the increase of the Fe/Ni ratio has a significant influence on the microstructural development and material properties. The XRD data reveal considerable solid solubility extension in these powders. The tungsten carbide and iron rich intermetallic compounds were formed after long milling times, which can change the relative density and hardness of the alloy. It is essential that we understand the role of intermetallic phases in the ODS tungsten heavy alloy which determine the material properties and the control of microstructural development.
机译：氧化物弥散强化的钨重合金因其高密度，强度和刚度而被广泛用于工业和军事应用。这些合金是通过机械合金化生产的，可以提供纳米氧化物颗粒的均匀分布和极细的晶粒结构，从而降低了烧结温度。但是，在此过程中，高能球磨过程可能会从样品瓶和研磨介质中引入铁污染。在这项研究中，研究了W-Ni-Y2O3合金作为铣削时间的函数。结果表明，Fe / Ni比的增加对显微组织的发展和材料性能有重要影响。 XRD数据表明在这些粉末中相当大的固体溶解度扩展。长时间研磨后会形成碳化钨和富铁金属间化合物，这会改变合金的相对密度和硬度。我们必须了解金属间相在ODS钨重合金中的作用，这些作用决定了材料的性能以及对微结构发展的控制。

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  • 来源
    《Metals and Materials International》 |2013年第5期|1047-1051|共5页
  • 作者

    Chun-Liang Chen; Chun-Lin Huang;

  • 作者单位

    Department of Materials Science and Engineering National Dong Hwa University">(1);

    Department of Materials Science and Engineering I-Shou University">(2);

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