Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Depletion of Solid Solution Elements and Change of Carbides in Artificially Aging Heat Treated 2.25CrMo Steel

인공 경년열화 열처리된 2.25CrMo 강에서의 고용원소 고갈 및 탄화물 변화

  • Byeon, Jal Won (Research Institute of Engineering and Technology, Korea University) ;
  • Pyo, S.W. (Division of Materials Science and Engineering, Korea University) ;
  • Kwun, S.I. (Division of Materials Science and Engineering, Korea University)
  • 변재원 (고려대학교 공학기술연구소) ;
  • 표승우 (고려대학교 재료금속공학부) ;
  • 권숙인 (고려대학교 재료금속공학부)
  • Received : 2002.01.22
  • Published : 2002.03.30
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Abstract

The depletion of solid solution elements from matrix and the change of carbides during artificial aging of 2.25CrMo steel at $630^{\circ}C$ were investigated. The Mo and Cr elements were found to be depleted drastically in the early stage of aging. The change of carbides was confirmed by analyzing the XRD patterns of electrolytically extracted carbides. Four type of carbides, $M_{23}C_6$, $M_3C$, $M_2C$ and $M_6C$, were found to exist in the specimen before aging. The amount of $M_6C$ carbides increased with aging time, while that of $M_3C$ carbides diminished after short aging time.

Keywords

Acknowledgement

Supported by : 한국과학재단

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