한국분말야금학회:학술대회논문집 (Proceedings of the Korean Powder Metallurgy Institute Conference)

한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
권호 표지

Compressive Behavior of 7xxx Series Al Composites Reinforced with $Al_2O_3$

  • Seo, Young-Ik (Division of Materials Science and Engineering, Hanyang University) ;
  • Min, Kyung-Ho (Division of Materials Science and Engineering, Hanyang University) ;
  • Lee, Kyu-Hwan (Future Technology Research Division, Korea Institute of Science and Technology) ;
  • Kim, Young-Do (Division of Materials Science and Engineering, Hanyang University)
  • 발행 : 2006.09.24
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초록

Mechanical properties of 7xxx series Al metal matrix composite (MMC) powders containing different amounts of ceramic were investigated. The ceramic contents of the starting powders were 5 wt.% or 10 wt.%. The powders were uniaxially cold compacted using a cylindrical die with a compacting pressure of 250 MPa and were sintered at $620^{\circ}C$ in a dry $N_2$ atmosphere for 60 min. For the heat treatment, sintered parts were solution treated at $475^{\circ}C$ and aged at $175^{\circ}C$. Compression tests were conducted to reveal the effect of $Al_2O_3$ particle content on the mechanical properties of the composites. Fractography was examined using a scanning electron microscope.

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