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Vol.25, No.4, 269 ~ 278, 1987
Title
Recrystallization Behavior of Martensite in Fe 32% Ni Alloy
최종술Chong Sool Choi, 손인진In Jin Shon
Abstract
Recrystallization behavior of martensite of Fe-32%Ni alloy has been studied with hardness measurement method. Hardness vs. temperature curves at all deformation degrees consist of two steps: first step is due to reverse transformations from martensite to austenite, and second step recrystallizations of reversed austenites. Recrystallization of martensite necessarily occurs after reverse transformation from martensite to austenite, and the recrystallization temperature is decreased with increasing deformation degree. Activation energy for recrystallization is also decreased with increasing deformation degree. From the discussion of the activation energy, it is suggested that the recrystallization is controlled by nucleation process. Reverse transformation temperature (As) becomes higher as the deformation degree is increased.
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