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Effect of Diameter and Contact Angle on Initial Aggregation of Solid Inclusions in Molten Steels

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Abstract

The effect of the diameter and contact angle on the aggregation of solid inclusions in molten steel was investigated based on the cavitation theory. Larger inclusions aggregated more easily, owing to the lower stable energy and larger critical aggregation spacing. The critical aggregation spacing had an explicit relationship with inclusion diameters: \( d_{{{\text{C}},{\text{Al}}_{{\text{2}}} {\text{O}}_{{\text{3}}} }} \) = 0.195(RP1RP2)0.5−0.021(RP1+RP2), dC,MgO = 0.099(RP1RP2)0.5−0.013(RP1+RP2) and \( d_{{{\text{C}},{\text{SiO}}_{{\text{2}}} }} \) = 0.031(RP1RP2)0.5−0.0061(RP1+RP2). Furthermore, calculated results showed that the aggregation tendency of the three considered types of inclusions was Al2O3 > MgO > SiO2.

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Acknowledgments

The authors are grateful for support from the National Natural Science Foundation China (Grant Nos. U1860206, 51725402, 51904025), the Fundamental Research Funds for the Central Universities (Grant No. FRF-TP-19-037A2Z), the National Postdoctoral Program for Innovative Talents (Grant No. BX20190030), the High Steel Center (HSC) at Yanshan University and the High Quality Steel Consortium (HQSC) at University of Science and Technology Beijing, China.

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Authors and Affiliations

  1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing (USTB), Beijing, 100083, China

    Jujin Wang, Yuexin Zhang & Haojian Duan

  2. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, Hebei, China

    Lifeng Zhang

  3. School of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, Hebei, China

    Qiang Ren

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  1. Jujin Wang
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Manuscript submitted May 11, 2021; accepted July 19, 2021.

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Wang, J., Zhang, L., Zhang, Y. et al. Effect of Diameter and Contact Angle on Initial Aggregation of Solid Inclusions in Molten Steels. Metall Mater Trans B 52, 2831–2836 (2021). https://doi.org/10.1007/s11663-021-02284-6

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