Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Microstructures of W-Mo-Ni-Fe Heavy Alloys

  • Lin, Kuan-Hong (Department of Mechanical Engineering, Tung-Nan Institute Technology) ;
  • Hsu, Chen-Siang (Department of Materials Science and Engineering, National Formosa University) ;
  • Lin, Shun-Tian (Department of Mechanical Engineering, National Taiwan University of Science and Technology)
  • Published : 2006.09.24
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Abstract

Tungsten heavy alloys with different ratios of Mo and Ni-Fe matrix were liquid-phase-sintered to investigate their microstructural evolution. Results indicated that increased Mo in the alloy promoted the formation of a (W,Mo)(Ni,Fe) type intermetallic compound in the furnace-cooled condition. It was a monoeutectic reaction when the added Mo content was higher than 49at.%, or a eutectic reaction when this value was between 37at,% to 49at.%. When Mo was added between 25at.% to 37at.%, the precipitation of the intermetallic compound took place by either a eutectoid or peritectoid reaction.

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