Monte Carlo study on abnormal growth of Goss grains in Fe-3%Si steel induced by second-phase particles

International Journal of Minerals, Metallurgy, and Materials - Tập 23 - Trang 1397-1403 - 2016
Dong-qun Xin1, Cheng-xu He1, Xue-hai Gong2, Hao Wang1, Li Meng3, Guang Ma4, Peng-fei Hou5, Wen-kang Zhang5
1School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
2Global Energy Interconnection Research Institute, Beijing, China
3Beijing R&D Center, East China Branch of Central Iron and Steel Research Institute, Beijing, China
4Department of Electrical Engineering New Materials, Global Energy Interconnection Research Institute, Beijing, China
5Technical Center, Taiyuan Iron and Steel (Group) Co., Ltd, Taiyuan, China

Tóm tắt

The selective abnormal growth of Goss grains in magnetic sheets of Fe-3%Si (grade Hi-B) induced by second-phase particles (AlN and MnS) was studied using a modified Monte Carlo Potts model. The starting microstructures for the simulations were generated from electron backscatter diffraction (EBSD) orientation imaging maps of recrystallized samples. In the simulation, second-phase particles were assumed to be randomly distributed in the initial microstructures and the Zener drag effect of particles on Goss grain boundaries was assumed to be selectively invalid because of the unique properties of Goss grain boundaries. The simulation results suggest that normal growth of the matrix grains stagnates because of the pinning effect of particles on their boundaries. During the onset of abnormal grain growth, some Goss grains with concave boundaries in the initial microstructure grow fast abnormally and other Goss grains with convex boundaries shrink and eventually disappear.

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Thông tin xuất bản

International Journal of Minerals, Metallurgy, and Materials

Tập 23

1397-1403

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