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Stability Diagram of Mg-Al-O System Inclusions in Molten Steel

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Abstract

In the current study, the stability diagrams of Mg-Al-O system in molten steel are calculated using two methods. After comparing the result of connecting iso-oxygen contours of different phases (iso-oxygen contours method) and calculating the border lines of different phases (border lines method), the former method is more accurate and popular. Particularly, the detailed calculation procedures and connection line principles of stability diagram are exhibited. The effects of interaction coefficient, temperature, and activity of oxides on the stability diagram are also discussed. With the currently reported method, stability diagrams of various inclusions in molten steel can be calculated to predict the formation of inclusions.

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Acknowledgments

The authors are grateful for support from the National Science Foundation China (Nos. 51274034, 51334002, and 51404019), State Key Laboratory of Advanced Metallurgy, Beijing Key Laboratory of Green Recycling and Extraction of Metals (GREM), the Laboratory of Green Process Metallurgy and Modeling (GPM2), and the High Quality steel Consortium (HQSC) at the School of Metallurgical and Ecological Engineering at University of Science and Technology Beijing (USTB), China.

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Author notes

  1. Liyuan Sun (PhD Student, Postdoctor)

    Present address: Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P.R. China

Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, Beijing Key Laboratory of Green Recycling and Extraction of Metals (GREM) and School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing (USTB), Beijing, 100083, P.R. China

    Lifeng Zhang (Professor), Ying Ren (PhD Student), Haojian Duan (PhD Student), Wen Yang (Lecturer) & Liyuan Sun (PhD Student, Postdoctor)

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  1. Lifeng Zhang
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  2. Ying Ren
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  3. Haojian Duan
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Corresponding author

Correspondence to Ying Ren.

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Manuscript submitted January 25, 2014.

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Zhang, L., Ren, Y., Duan, H. et al. Stability Diagram of Mg-Al-O System Inclusions in Molten Steel. Metall Mater Trans B 46, 1809–1825 (2015). https://doi.org/10.1007/s11663-015-0361-7

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