Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Special Issue on: Temperature Production of Clean Alloyed Steel
Thermodynamics of Molten MnS-FeS and CrS-FeS System at 1843 K
Yan Lu, Takahiro Miki
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Keywords: sulfide inclusion, activity, thermodynamics, phase equilibrium, regular solution model
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2022 Volume 108 Issue 8 Pages 525-534

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Abstract

Phase equilibria in Fe-Mn-S and Fe-Cr-S ternary systems at 1843 K were investigated experimentally, respectively. The main characteristic of these two systems at 1843 K was confirmed to be a wide miscibility gap between two liquid phases: molten metal alloy phase and molten sulfide phase. Through metal/sulfide equilibrium method, activity of constituents in sulfide phase were determined in Fe-Mn-S and Fe-Cr-S systems separately. The activity curves of constituents in sulfide phase were estimated by utilizing regular solution model.

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