MODEL for PREDICTING RECRYSTALLIZATION BEHAVIOR OF COLD ROLLED EXTRALOW CARBON STEEL SHEETS

Microstructual observations indicate that the recrystallization of cold rolled extralow carbon steel sheets occurs due to the abnormal growth of selected subgrains in recovered subgrain microstructures. The authors measured the orientations of a recovered microstructure of a cold rolled extralow carbon steel sheet by SEM-EBSP and classified the deformed grains into several types due to the orientation and its scattering degree. In this study, a model for predicting the recrystallization behavior of cold rolled extralow carbon steels has been developed by applying the model of Humphreys modified to the grain of each type. A good agreement between the experimental and calculated results using the model developed was obtained.