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Thermodynamics of iron-manganese aluminate spinel inclusions in steel

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Abstract

The effect of manganese on the residual oxygen concentrations of liquid iron in equilibrium with alumina saturated iron-manganese aluminate spinel solid solutions was investigated at temperatures of 1550, 1600, and 1650°C. The relationship between the equilibrium concentrations of manganese and oxygen in iron melts containing up to 6 wt pct manganese has been established. The compositions of the spinel deoxidation products, (Fe x Mn j-x ) O · Al2O3, which were formed during equilibration with the iron melts were determined with electron microprobe and neutron activation analysis. From these results, new thermodynamic data pertaining to galaxite formation reactions have been derived and their implications with respect to the deoxidation of aluminum semikilled, silicon free, steels have been discussed.

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Authors and Affiliations

  1. University of Toronto, M5S 1 A4, Toronto, Ontario, Canada

    C. K. Kim (Senior Research Associate) & A. McLean (Professor of Metallurgy and Materials Science)

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  1. C. K. Kim
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  2. A. McLean
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Kim, C.K., McLean, A. Thermodynamics of iron-manganese aluminate spinel inclusions in steel. Metall Trans B 10, 575–584 (1979). https://doi.org/10.1007/BF02662560

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  • DOI: https://doi.org/10.1007/BF02662560

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