한국주조공학회지 (Journal of Korea Foundry Society)

  • 제21권2호
  • /
  • Pages.119-126
  • /
  • 2001
  • /
  • 1598-706X(pISSN)
  • /
  • 2288-8381(eISSN)
한국주조공학회 (Korea Foundry Society)
권호 표지

Al/흑연 압출재를 이용한 Al-Si/흑연 복합재료 제조와 감쇠능

Manufacturing and Damping Properties of Al-Si/Gr. Composite using extruded Al/Gr. Composite

  • 박헌범 (충남대학교 재료공학부) ;
  • 권혁무 (충남대학교 재료공학부)
  • Park, Hun-Berm (Div. of Material Eng., Chungnam National University) ;
  • Kwon, Hyuk-Moo (Div. of Material Eng., Chungnam National University)
  • 발행 : 2001.04.20
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초록

Al/15%Gr. composite have been manufactured by mixing, compacting, and extruding aluminium powder and graphite powder. Then, Al-6%Si/x%Gr., Al-12%Si/x%Gr., and Al-18%Si/x%Gr.(x: 0, 2, 4, 6, 8) composites have been manufactured by remelting the extruded materials(Al/15%Gr.), Al-33.3%Si alloy, and Al ingot, etc. We conducted experiments to chracterize the microstructure, and damping properties and hardness. The result of microstructure experiment on Al-x%Si/y%Gr. composites reveals the good dispersion of graphite. As to Al-Si/y%Gr. composites, the more the graphite contents, the less the tensile strength. And the tensile strength varied according to contents of Si: with its highest value in Al-18%Si/y%Gr. composites and lowest in Al-6%Si/y%Gr. composites. As to Al-x%Si/y%Gr. composites, the more the contents of graphite, the more the vibration damping properties. And we can get the highest vibration damping rate in Al-12%Si/y%Gr. composites which matrix structure is an eutectic component.

키워드

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