1 Department of Electrical Engineering New Materials, Global Energy Interconnection Research Institute, Beijing 102211 2 State Grid Corporation of China, Beijing 100031 3 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 4 Central Iron and Steel Research Institute, Beijing 100081
The orientation data of surface grains of the primary recrystallized samples of thin gauge grain oriented silicon steel (0.18 mm thick) were obtained by EBSD experiment and the initial microstructure were generated from the orientation data. The Potts model Monte Carlo method was used to simulate the secondary recrystallization of thin gauge graded grain oriented silicon steel, and the effect of surface energy on the evolution of Goss texture was studied. The simulation results show that the surface energy difference between Goss grain and its adjacent grains is an important driving force for Goss grain growth. The surface energy diffe-rence has a critical value (≈12%), only when the surface energy difference is larger than the critical value, can the surface energy-driven abnormal Goss grain growth occur.
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