한국분말재료학회지 (Journal of Powder Materials)

  • 제20권2호
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  • Pages.138-141
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  • 2013
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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Microstructural Feature of Full-densified W-Cu Nanocomposites Containing Low Cu Content

  • Lee, Jai-Sung (Department of Metallurgy and Materials Science, Hanyang University-ERICA) ;
  • Jung, Sung-Soo (Department of Metallurgy and Materials Science, Hanyang University-ERICA) ;
  • Choi, Joon-Phil (Department of Metallurgy and Materials Science, Hanyang University-ERICA) ;
  • Lee, Geon-Yong (Department of Metallurgy and Materials Science, Hanyang University-ERICA)
  • 투고 : 2013.03.30
  • 심사 : 2013.04.15
  • 발행 : 2013.04.28
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초록

The microstructure evolution during sintering of the W-5 wt.%Cu nanocomposite powders was investigated for the purpose of developing a high density W-Cu alloy. The W-5 wt.%Cu nanopowder compact, fully-densified during sintering at 1623 K, revealed a homogeneous microstructure that consists of high contiguity structures of W-W grains and an interconnected Cu phase located along the edges of the W grains. The Vickers hardness of the sintered W-5 wt.%Cu specimen was $427{\pm}22$ Hv much higher than that ($276{\pm}19$ Hv) of the conventional heavy alloy. This result is mostly due to the higher contiguity microstructure of the W grains compared to the conventional W heavy alloy.

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