대한금속재료학회지 (Korean Journal of Metals and Materials)

  • 제48권11호
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  • Pages.1003-1008
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  • 2010
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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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과공정 Al-Si 합금의 마모 거동과 기계적 성질에 미치는 TiC와 AlN의 영향

Effect of TiC and AlN on the Wear Behavior and Mechanical Properties of Hypereutectic Al-Si Alloys

  • Ju, Seung Hwan (School of Materials Science and Engineering, Pusan National University) ;
  • Choi, Jin Myung (School of Materials Science and Engineering, Pusan National University) ;
  • Kim, Yong Jin (Department of Powder Materials Research, Korea Institute of Materials Science) ;
  • Park, Ik Min (School of Materials Science and Engineering, Pusan National University) ;
  • Park, Yong Ho (School of Materials Science and Engineering, Pusan National University)
  • 투고 : 2010.09.17
  • 발행 : 2010.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, the effect of the reinforcement on the wear behaviour and mechanical properties of hypereutectic Al-Si alloys was investigated. The Gas atomized hypereutectic Al-20Si alloy powders were mixed with 1, 3, and 5 wt.% AlN and TiC ceramic particles and consolidated by hotpress. The Al-20Si powder has both finely dispersed primary Si phases and eutectic structures. The Al-20Si-AlN, TiC composites showed that the reinforcements were distributed along the boundary of the Al-20Si alloy. The UTS increased with increasing the AlN, TiC contents. At a lower load, with an increasing weight fraction of reinforcements, the wear rate decreased in both composites and the wear mechanism was adhesive wear. At a higher load, the shape of the debris changes the mechanism of the AlN composites to abrasive-adhesion wear and this resulted in an increase of the wear rate.

키워드

과제정보

연구 과제 주관 기관 : 지식경제부, 교육과학기술부, 한국연구재단

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