Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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A Study on Aging and Wear Behaviors of Al-5Mg-X(Si, Cu, Ti)/SiCp Composites Fabricated by Pressureless Infiltration Method

무가압 침투에 의하여 제조된 Al-5Mg-X(Si, Cu, Ti)/SiCp 복합재료의 시효 및 마멸특성에 관한 연구

  • Woo, Kee-Do (Division of New Materials Eng. & Automobile High-Technology Research Institute, Chonbuk National University) ;
  • Kim, Sug-Won (Division of New Materials Eng. & Automobile High-Technology Research Institute, Chonbuk National University) ;
  • Na, Hong-Suk (Division of New Materials Eng. & Automobile High-Technology Research Institute, Chonbuk National University) ;
  • Moon, Ho-Jung (Division of New Materials Eng. & Automobile High-Technology Research Institute, Chonbuk National University)
  • 우기도 (전북대학교 신소재공학부, 자동차신기술연구소) ;
  • 김석원 (전북대학교 신소재공학부, 자동차신기술연구소) ;
  • 나홍석 (전북대학교 신소재공학부, 자동차신기술연구소) ;
  • 문호정 (전북대학교 신소재공학부, 자동차신기술연구소)
  • Published : 2000.10.20
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Abstract

The objective of this work was to investigate the effects of SiC particle size(50, 100 ${\mu}m$) and additional elements such as Si, Cu and Ti on aging behavior in Al-5Mg-X(Si,Cu,Ti)/SiCp composites fabricated by pressureless infiltration method using hardness and wear test, scanning electron microscopy(SEM) and differential scanning calorimetry(DSC). The peak aging time in Al-5Mg-X(Si, Cu, Ti)/SiCp(50, 100 ${\mu}m$) composites is shorter than Al-5Mg-0.3Si alloy.The peak aging time of 50 ${\mu}m$ SiC particle reinforced Al-5Mg-X(Si,Cu,Ti) composites is shorter than those of 100 ${\mu}m$ SiC particle reinforced of Al-5Mg-X(Si,Cu,Ti) composites. The Al-5Mg-0.3Si-0.1Cu-0.1Ti/SiCp(50 ${\mu}m$) composites aged at $180^{\circ}C$ has higher hardness and better wear resistance than any other aged composite.The aging effect is promoted by the addition of Si and Cu in Al-5Mg/SiCp composites, so the wear resistance of Al-5Mg/SiCp composites with Si and Cu elements is enhanced by the aging treatment.

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