Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Microstructure and Wear Characteristics of Nickel Reinforced AC8A Composites

  • Kim, Hyung-Jin (Department of Mechanic System Engineering, Gyeongsang Natioanal University) ;
  • Tulugan, Kelimu (Department of Ocean System Engineering, GyeongSang National University) ;
  • Park, Won-Jo (Department of energy and Mechanical Engineering, GyeongSang National University)
  • Received : 2014.10.02
  • Accepted : 2015.02.07
  • Published : 2015.02.28
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Abstract

This study takes AC8A, which is a representative light weight alloy as matrix, and nickel as reinforcement for its superior properties. The manufacturing method applied in this study required low pressure for the infiltration of the metal matrix into the reinforcement. Porous Ni was applied as preform. The fabrication was conducted under 0.3 MPa at 600, 700 and 750 degrees centigrade, respectively. Intermetallic compounds Al3 generated between Al and Ni were observed in the composites. Microstructure, Vickers' hardness and wear characteristics of the composites were also investigated. The result indicates that the structures of compounds created at 650 degree centigrade were distributed densely; the grain size of the substances and the compounds was increased with the infiltration temperature.

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