第一作者：李阳
通讯作者：陈常勇,姜周华
合写作者：秦国清
发表刊物：Crystals
期号：12
卷号：12
影响因子：2.4
DOI码：10.3390/cryst12121721
所属单位：东北大学冶金学院
教研室：绿色智能特殊钢冶金研究中心
摘要：The effects of the Al2O3 content and basicity of CaO-SiO2-Al2O3-10 wt.% MgO refining slag on inclusions removal in 55SiCr spring steel were investigated. The viscosity of slag was studied using a viscometer, while the microstructure investigation involved using a water-quenching furnace and a Fourier-transform infrared spectrometer. The influence mechanism of the slag adjustment on inclusions was explored through thermodynamic calculations and kinetic analysis. The results indicated that the viscosity of the molten slag increased gradually with the content of Al2O3 increasing due to it increasing the degree of polymerization of the slag network structure, especially the [AlO4](5-) and [Si-O-Si] structures. In contrast, the viscosity of molten slag experienced the opposite pattern, with the basicity of molten slag increasing. This was due to the fact that Ca2+ can significantly reduce the degree of polymerization of a slag network structure, especially the percentages of the [SiO4](4-), [AlO4](5-) and [Si-O-Si] network structures. Finally, the changes in physical properties and structure of slag significantly affected the removal effect of the inclusions in molten steel. As a result, the number, size distribution, composition distribution and morphology of the inclusions displayed significant changes when the content of Al2O3 increased from 3 wt.% to 12 wt.% and the basicity of the slag gradually increased from 0.5 to 1.2.
关键字：55SiCr steel; spring steel; refining slag; non-metallic inclusions; high temperature viscosity
论文类型：SCI
备注：无
学科门类：工学
一级学科：冶金工程
页面范围：1721
ISSN号：2073-4352
是否译文：否