Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Reverse Transformation Behavior in Thermomechanically Processed Fe-30%Ni-0.35%C Alloy

가공열처리한 Fe-30%Ni-0.35%C합금의 역변태거동

  • Ahn, H.K. (Faculty of New Materials Engineering & Research Institute of Advanced Materials Development, Chonbuk National University) ;
  • Yu, C.H. (Faculty of New Materials Engineering & Research Institute of Advanced Materials Development, Chonbuk National University) ;
  • Kim, H.S. (Faculty of New Materials Engineering & Research Institute of Advanced Materials Development, Chonbuk National University)
  • 안행근 (전북대학교 공과대학 신소재공학부, 신소재개발연구소) ;
  • 유정희 (전북대학교 공과대학 신소재공학부, 신소재개발연구소) ;
  • 김학신 (전북대학교 공과대학 신소재공학부, 신소재개발연구소)
  • Published : 1999.12.31
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Abstract

The reverse transformation behavior was investigated by DSC analysis in thermomechanically processed Fe-30%Ni-0.35%C alloy. Upon increasing the heating rate from $5^{\circ}C/min$ to $80^{\circ}C/min$, the As point of the ausformed martensite was not changed and the As point of the marformed martensite decreased at reverse transformation. The Af points showed to be constant with increasing the heating rate both in the ausformed martensite and in the marformed martensite. With increasing the deformation degree, the As points of the ausformed martensite and the marformed martensite increased and the Af points appeared to be constant, structures. The enthalpy changes increased with increasing the heating rate, but decreased with increasing the deformation degree in both structures.

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