A role of fractions of mobile grain boundaries in secondary recrystallization of Fe-Si steels

Grain growth during annealing of polycrystalline materials is influenced by the type of grain boundaries a grain encounters as it grows. Simple comput er experiments have been performed to ascertain which type of boundaries ar e responsible for the abnormal grain growth (AGG) in Fe-3% Si steels. In mo delling abnormal grain growth, two different assumptions are used, the firs t one is that the coincidence site lattice (CSL) boundaries have high mobil ity and the second is that high energy boundaries are more mobile than othe r boundaries. The results of the computer experiments support the latter mo del for abnormal grain growth in Fe-3% Si steels. Finally, the importance o f fractions of mobile grain boundaries on the development of Goss texture i s discussed. (C) 1999 Acta Metallurgica Inc. Published by Elsevier Science Ltd. All rights reserved.