Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Effect of the Amount of Retained Austenite on the Mechanical Properities of Austempered Ductile Iron

오스템퍼드 구상흑연주철품의 기계적 성질에 미치는 잔류오스테나이트량의 영향

  • Choi, J.O. (Department of Metallurgical Eng., Dong-a University) ;
  • Lee, S.H. (Department of Metallurgical Eng., Dong-a University) ;
  • Park, S.T. (Department of Metallurgical Eng., Dong-a University) ;
  • Choi, C.O. (Department of Metallurgical Eng., Dong-a University)
  • 최준오 (동아대학교 재료금속.화학공학부) ;
  • 이상학 (동아대학교 재료금속.화학공학부) ;
  • 최창옥 (동아대학교 재료금속.화학공학부) ;
  • 박성택 (동아대학교 재료금속.화학공학부)
  • Received : 2002.05.29
  • Published : 2002.07.30
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Abstract

Austempered Ductile Iron (ADI) castings having various chemical composition and heat treatment conditions were investigated. Especially, this study was investigated the influence of various parameters on austempering temperature and alloying elements. The addition of Mo, Cu, and Ni individually or combined in these alloys also investigated. The alloying elements influence the austempering reaction, the microstructures, mechanical properties and amount of retained austenite. In this study, the mechanical properties (ultimate tensile strength(UTS), hardness, elongation) are analysed to show the relationship between alloying elements, austempering temperatures and amount of retained austenite. The amount of retained austenite was the range of 15 - 40%. In case of the alloy to witch Mo, Cu, and Ni was added, the amount of retained austenite was the largest at a constant austempering temperature.

Keywords

References

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