대한금속재료학회지 (Korean Journal of Metals and Materials)

  • 제49권9호
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  • Pages.720-725
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  • 2011
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  • 1738-8228(pISSN)
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  • 2288-8241(eISSN)
대한금속재료학회 (The Korean Institute of Metals and Materials)
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W-Ni-Fe 중합금의 기계적 특성에 미치는 Fe7W6상(μ-phase)의 영향

Effect of Fe7W6 Phase (μ-phase) on Mechanical Properties of W-Ni-Fe Heavy Alloy

  • 전용진 (한양대학교 신소재공학과) ;
  • 김세훈 (한양대학교 신소재공학과) ;
  • 김영도 (한양대학교 신소재공학과)
  • Jeon, Yong Jin (Department of Materials Science and Engineering, Hanyang University) ;
  • Kim, Se Hoon (Department of Materials Science and Engineering, Hanyang University) ;
  • Kim, Young Do (Department of Materials Science and Engineering, Hanyang University)
  • 투고 : 2011.04.18
  • 발행 : 2011.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

W-Ni-Fe heavy alloys have been used in various fields, such as kinetic energy penetrators and radiation shielding materials, due to their high density and good mechanical properties. In this study, the sintering of W-Ni-Fe alloys with various Ni/Fe ratios was demonstrated to improve the mechanical properties and penetration capabilities of heavy alloys by formation of interfacial phase. The microstructural changes and the mechanical properties of the W-Ni-Fe alloys after liquid-phase sintering were investigated. The Vickers hardness and tensile strength of the 95W1.3Ni3.7Fe sample, which had coated W grains by $Fe_7W_6$ phase (${\mu}$-phase), were 450 Hv and 1560 MPa, respectively. As a result, enhancement of the mechanical properties was considered to have uniformly generated ${\mu}$-phase around W grains.

키워드

과제정보

연구 과제 주관 기관 : 국방과학연구소

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