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Influences of sub-micrometer Ta and Co dopants on microstructure and properties of tungsten heavy alloys
引用本文:谭兴龙,冷邦义,邱绍宇,李强,何文艳,王传海,雷代富. Influences of sub-micrometer Ta and Co dopants on microstructure and properties of tungsten heavy alloys[J]. 中国有色金属学会会刊, 2004, 14(4): 747-750
作者姓名:谭兴龙  冷邦义  邱绍宇  李强  何文艳  王传海  雷代富
作者单位:[1]ChinaAcademyofEngineeringPhysics,P.O.Box919-71,Mianyang621907,China [2]NuclearPowerInstituteofChina,P.O.Box436-4,Chengdu610041,China
摘    要:Tungsten heavy alloys are aggregates of particles of tungsten bonded with Ni/Fe or Ni/Cu via liquidphase sintering. The sub-micrometer Ta Co powder was added to this aggregate to strengthen the bonding phase. It is found that the main fracture pattern of the alloys is cleavage of tungsten grains and ductile rupture of bond phase,leading to improved tensile strength and elongation. Dopant Ta can act as grain size inhibitor in tungsten heavy alloys.

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Influences of sub-micrometer Ta and Co dopants on microstructure and properties of tungsten heavy alloys
TAN Xing-long. Influences of sub-micrometer Ta and Co dopants on microstructure and properties of tungsten heavy alloys[J]. Transactions of Nonferrous Metals Society of China, 2004, 14(4): 747-750
Authors:TAN Xing-long
Abstract:Tungsten heavy alloys are aggregates of particles of tungsten bonded with Ni/Fe or Ni/Cu via liquidphase sintering. The sub-micrometer Ta Co powder was added to this aggregate to strengthen the bonding phase. It is found that the main fracture pattern of the alloys is cleavage of tungsten grains and ductile rupture of bond phase,leading to improved tensile strength and elongation. Dopant Ta can act as grain size inhibitor in tungsten heavy alloys.
Keywords:tungsten heavy alloys  sub-micrometer  Co powder  Ta powder  cleavage fracture
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