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W-Ni-Fe 중합금의 기계적 특성에 미치는 Fe_7W_6상(μ-phase)의 영향Effect of Fe7W6 Phase (mu-phase) on Mechanical Properties of W-Ni-Fe Heavy Alloy
- Other Titles
- Effect of Fe7W6 Phase (mu-phase) on Mechanical Properties of W-Ni-Fe Heavy Alloy
- Authors
- Jeon, Yong Jin; Kim, Se Hoon; Kim, Young Do
- Issue Date
- Sep-2011
- Publisher
- 대한금속·재료학회
- Keywords
- composites; sintering; microstructure; hardness test; compression test
- Citation
- 대한금속·재료학회지, v.49, no.9, pp 720 - 725
- Pages
- 6
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- 대한금속·재료학회지
- Volume
- 49
- Number
- 9
- Start Page
- 720
- End Page
- 725
- ISSN
- 1738-8228
2288-8241
- Abstract
- 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 Fe7W6 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.
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