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Hongguang Zheng, and Weiqing Chen, Formation of CaO-TiO2-MgO-Al2O3 dual phase inclusion in Ti stabilized stainless steel, J. Univ. Sci. Technol. Beijing , 13(2006), No. 1, pp.16-20. https://dx.doi.org/10.1016/S1005-8850(06)60006-6
Cite this article as: Hongguang Zheng, and Weiqing Chen, Formation of CaO-TiO2-MgO-Al2O3 dual phase inclusion in Ti stabilized stainless steel, J. Univ. Sci. Technol. Beijing , 13(2006), No. 1, pp.16-20. https://dx.doi.org/10.1016/S1005-8850(06)60006-6
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Formation of CaO-TiO2-MgO-Al2O3 dual phase inclusion in Ti stabilized stainless steel

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  • The formation of CaO-TiO2-MgO-Al2O3 dual phase inclusion in 321 stainless steel was investigated in the laboratory. The result indicated that the condition for the formation of CaOTiO2-MgOAl2O3 in 321 steel is Ca>0.001wt%, Ti>0.1wt%, and Al>0.01wt%. The mechanism is the following: Al2O3 inclusion turns into CaO-Al2O3 after Ca-Si wire is fed into the molten steel; Mg is then obtained by reducing MgO in slag or crucible wall by Al and Ti; finally CaO-Al2O3 inclusion is changed into CaO-TiO2-MgO-Al2O3 by the reaction with Mg, Ti, and O in the molten steel simultaneously.
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