Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Effect of ADI Heat Treatment Conditions on the Core Structure and Mechanical Properties of GCD45

GCD 45 중심부 조직 및 기계적 성질에 미치는 ADI 열처리 조건의 영향

  • Kim, H.G. (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • You, Y.Z. (RRC/Remm.School of mat & met. eng., univ. of Ulsan) ;
  • Lee, J.S. (RRC/Remm.School of mat & met. eng., univ. of Ulsan) ;
  • Chung, T.Y. (Korea heat treatment co.)
  • 김한군 (부경대학교 금속공학과) ;
  • 유용주 (울산대학교 지역협력연구센터 기계부품 및 소재특성 평가 연구센터) ;
  • 이재식 (울산대학교 지역협력연구센터 기계부품 및 소재특성 평가 연구센터) ;
  • 정태영 (한국열처리)
  • Received : 2001.11.04
  • Published : 2002.01.30
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Abstract

The effect of ADI heat treatment conditions on the core microstructures and mechanical properties of GCD 45 has been investigated. In the case of $25{\ss}{\AE}$ in diameter, it has been found that pearlite structure is not obtained, and the matrix is consisted of graphite, bainite and retained austenite. Upon cooling isothermally from $900^{\circ}C$, the core structure of 35 mm in diameter is converted to pearlite. However, the structure is transformed to bainite after slow cooling from $900^{\circ}C$ to $800^{\circ}C$.

Keywords

References

  1. R. C. Voigt: Cast Matals 4 (1991) 55