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Phase Equilibria in the Liquid Steel Deoxidized with Aluminum and Calcium in the Presence of Magnesium

  • THEORY OF METALLURGICAL PROCESSES
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Russian Metallurgy (Metally) Aims and scope

Abstract

The concentration regions of the phase equilibria of the components in a metallic Fe–Mg–Al–Ca–C–O melt at a temperature of 1600°C have been calculated and built for low-, medium-, and high-carbon steels by simulating the solubility surfaces of the components in a metal. The conditions of formation of calcium aluminate inclusions in the system are determined. Carbon is shown to influence the sequence of phase formation with the participation of strong deoxidizers, such as calcium, magnesium, and aluminum. The liquid metal is found to contain composition regions in equilibrium with a gaseous CO-based phase or a gaseous phase based on calcium and magnesium vapors.

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Funding

This work was supported by the Government of the Russian Federation (decision no. 211 of March 16, 2013), agreement no. 02.A03.21.0011.

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Authors and Affiliations

  1. National Research University Southern-Ural State University, 454080, Chelyabinsk, Russia

    G. G. Mikhailov, L. A. Makrovetz & O. V. Samoilova

  2. Institute of Metallurgy, Ural Branch, Russian Academy of Sciences, 620016, Yekaterinburg, Russia

    L. A. Smirnov

Authors
  1. G. G. Mikhailov
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  2. L. A. Makrovetz
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  3. O. V. Samoilova
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  4. L. A. Smirnov
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Correspondence to G. G. Mikhailov.

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Translated by Yu. Ryzhkov

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Mikhailov, G.G., Makrovetz, L.A., Samoilova, O.V. et al. Phase Equilibria in the Liquid Steel Deoxidized with Aluminum and Calcium in the Presence of Magnesium. Russ. Metall. 2020, 640–648 (2020). https://doi.org/10.1134/S0036029520060130

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  • DOI: https://doi.org/10.1134/S0036029520060130

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