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EVOLUTION OF TEXTURES OF COLUMNAR GRAINS IN Fe-3%Si ELECTRICAL STEEL SLABS |
Yongjun FU1,2,Ping YANG1(),Qiwu JIANG2,Xiaoda WANG2,Wenxu JIN2 |
1 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083
2 Cold Rolling Silicon Plant, Anshan Steel Co., Ltd., Anshan 114021 |
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Cite this article:
Yongjun FU, Ping YANG, Qiwu JIANG, Xiaoda WANG, Wenxu JIN. EVOLUTION OF TEXTURES OF COLUMNAR GRAINS IN Fe-3%Si ELECTRICAL STEEL SLABS. Acta Metall Sin, 2015, 51(5): 545-552.
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Abstract Different numbers of columnar grains in a Fe-3%Si electrical steel slabs with their major axes being parallel to the rolling direction were used for cold rolling and recrystallization annealing. The evolution of the texture of columnar grains was followed by EBSD technique. The results show that, in the case of single columnar grain with cube orientation, cube texture is adverse to be retained in condition of primary cold rolling with high reduction and recrystallization annealing, while strong cube texture can form after secondary cold rolling with low reduction and recrystallization annealing. But the cube texture hinders strongly the abnormal growth of Goss grains. For the sample containing two columnar grains with Goss and cube orientation, the initial Goss orientation rotates to {111}<112> orientation quickly and cube texture is retained effectively during cold rolling by high reduction. The interaction between the Goss and cube columnar grains is not strong. For the multi-columnar grains with different orientations, the grain boundaries between columnar grains promote g-texture and weaken the cube texture, which is in favor of abnormal growth of Goss grains.
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Received: 22 October 2014
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Fund: National Natural Science Foundation of China (No.51071024) |
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