한국주조공학회지 (Journal of Korea Foundry Society)

  • 제26권1호
  • /
  • Pages.34-39
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  • 2006
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  • 1598-706X(pISSN)
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  • 2288-8381(eISSN)
한국주조공학회 (Korea Foundry Society)
권호 표지

주조용 합금으로서 Mg-Y-X (X=Al or Mm) 합금의 주조성 및 크리프 성질에 관한 연구

Study on Castability and Creep Properties of Mg-Zn-Y-X (X=Al or Mm) Alloys as Casting Alloy

  • 임현규 (준결정재료연구단/연세대학교 금속시스템공학과) ;
  • 이주연 (준결정재료연구단/연세대학교 금속시스템공학과) ;
  • 김원태 (청주대학교 응용과학부) ;
  • 김도향 (준결정재료연구단/연세대학교 금속시스템공학과)
  • Lim, Hyun-Kyu (Center for Non-crystalline Materials / Dept. of Metallurgical Eng., Yonsei University) ;
  • Lee, Ju-Youn (Center for Non-crystalline Materials / Dept. of Metallurgical Eng., Yonsei University) ;
  • Kim, Won-Tae (Department of Applied Science, Cheongju University) ;
  • Kim, Do-Hyang (Center for Non-crystalline Materials / Dept. of Metallurgical Eng., Yonsei University)
  • 발행 : 2006.02.20
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초록

In the present study, the possibility of Mg-Zn-Y alloys as high temperature casting alloys has been investigated. The fluidity of alloys containing yttrium were better than that of commercial AZ91 alloy because the oxide layer on the surface reduced the reaction between melt, and air and mold, which would reduce the resistance during the process of filling the mold. However, this oxide film reduced the hot-tearing resistance. In the case of ZAW942, this alloy exhibited fluidity and hot-tearing resistance better than AZ91 alloy. Because of thermally stable quasicrystal and other phases obstructed the movement of grains, the creep resistance of alloys containing rare earth elements more than 2 wt% was better than that of AZ91 alloy.

키워드

참고문헌

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