Morphology and distribution control of MnS inclusions in molten steel by electropulsing
Morphology and distribution control of MnS inclusions in molten steel by electropulsing
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DOI：
10.1179/1432891714z.000000000829
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发表时间：
2014-07
影响因子：
--
通讯作者：
X. Zhang;W. J. Lu;R. Qin
中科院分区：
文献类型：
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作者：
X. Zhang;W. J. Lu;R. Qin
用电脉冲方法研究了钢水中MnS夹杂物的形态、尺寸和分布演变规律。结果表明，电脉冲处理后，未处理钢中的角状MnS夹杂物呈随机分布，而电脉冲处理后的钢表面则呈链状分布。结果表明，通过电流可以使夹杂物向表面移动，使夹杂物的尺寸变大，形貌得到改善。MnS的形态、尺寸及其分布的变化取决于电脉冲作用下的界面能和自由能的改变。因此，电脉冲处理为控制钢水中夹杂物，提高钢水的力学、物理和耐蚀性能提供了一种特殊而有效的方法。
Abstract The morphology, size and distribution evolutions of MnS inclusions in molten steel were investigated by electropulsing. The results show that angular MnS inclusions distributed randomly in the untreated as solidified steel, in contrast to chain-like formations on the surface of the steel under the treatment of electropulsing. It indicates that the passing electric current enables to move the inclusions toward the surface where inclusions achieve much larger size with modified morphology. The MnS changes in morphology and size and its distribution depend on the modified interfacial energy and free energy by electropulsing. Therefore, electropulsing treatment provides a special and effective approach to control inclusions in molten steel to improve their mechanical, physical and corrosion resistance properties.