Solidification Structure and Segregation of High Magnetic Induction Grain-Oriented Silicon Steel
Solidification Structure and Segregation of High Magnetic Induction Grain-Oriented Silicon Steel
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高磁感取向硅钢的凝固组织与偏析
DOI：
10.1007/s12540-019-00280-9
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发表时间：
2019-11
影响因子：
3.5
通讯作者：
Weiguang Pang
中科院分区：
文献类型：
--
作者：
Xin Li;Min Wang;Yanping Bao;Jian Gong;Xianhui Wang;Weiguang Pang
研究了高磁感取向硅钢板坯的凝固组织和中心偏析，以描述其凝固特征，比较连铸板坯的中心偏析程度。通过工业实验研究了二冷段电磁搅拌对板坯凝固行为的影响。S电磁搅拌制备了三种典型的铸坯，电流强度分别为0、200和350A。在低搅拌强度(0A)下浇铸的钢水比在高搅拌强度(200A和350A)下浇铸的钢水组织粗大。随着S电磁搅拌电流强度的增大，碳和硅的中心线偏析明显增加。电子探针分析表明，偏析斑点是中心线偏析的来源。实验结果表明，要优化取向硅钢板坯的中心线偏析，应扩大柱状晶区，减少等轴晶区。
The solidification structure and centerline segregation of high magnetic induction grain-oriented silicon steel slabs were studied to describe the characteristics of solidification and compare the degree of centerline segregation of continuously cast slabs. Industrial experiments were conducted to investigate the solidification behavior of slabs by secondary cooling segment electromagnetic stirring. Three typical slabs were produced by S-EMS with current intensities of 0, 200, and 350 A. Molten steel cast at a low stirring intensity (0 A) resulted in a coarse structure relative to those cast at higher stirring intensities (200 and 350 A). The centerline segregation of carbon and silicon markedly increased with increases in S-EMS current intensity. Composition distribution by electron probe microanalysis identified segregation spots as the sources of centerline segregation. Experimental results indicate that to optimize the centerline segregation of grain-oriented silicon steel slabs, the columnar crystal zone should be enlarged and the equiaxed crystal zone be reduced.
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影响因子：
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DOI：
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