Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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A Study of the Development of a High-Strength Al-Zn Based Alloy for Die Casting I

고강도 Al-Zn기 다이캐스팅 합금개발에 관한 연구 I

  • Shin, Sang-Soo (Green Technology Center, Korea Institute of Industrial Technology) ;
  • Yeom, Gil-Yong (ECO-Diecast Korea Co., Ltd.) ;
  • Kim, Eok-Soo (Green Technology Center, Korea Institute of Industrial Technology) ;
  • Lim, Kyung-Mook (Green Technology Center, Korea Institute of Industrial Technology)
  • 신상수 (한국생산기술연구원 친환경청정기술센터) ;
  • 염길용 (에코 다이캐스트 코리아) ;
  • 김억수 (한국생산기술연구원 친환경청정기술센터) ;
  • 임경묵 (한국생산기술연구원 친환경청정기술센터)
  • Received : 2010.07.02
  • Published : 2010.10.22
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Abstract

Al-Zn based alloys are the most common types of wrought Al alloys. Although Al-Zn alloys have high strength, they cannot be applied to a conventional casting process. In this study, Al-Zn-based alloys applicable to a die casting process were developed successfully. The developed Al-45 wt% Zn-based alloys showed a fine equiaxed grain structure and high strength. A fine equiaxed grain having an average size of $25{\mu}m$ was obtained by the die casting process. The UTS and elongation of the new alloy are 475 MPa and ~3.5%, respectively. In addition, we elucidate the effect of a Zn addition on variations in different mechanical properties and the microstructure characteristics of (Al96.3-xZnxCu3Si0.4Fe0.3) x=20, 30, 40, and 45 wt% alloys fabricated by a die casting process.

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