Abstract

A thermodynamic description of the Fe-Cr-Mn-C system has been obtained by the use of thermodynamic models for the Gibbs energy of individual phases. The thermodynamic properties of the Cr-Mn-C and Fe-Cr-Mn-C systems were evaluated simultaneously from the experimental information of both systems, based on recent thermodynamic descriptions of lower order systems, Fe-Cr-C, Fe-Mn-C, and Fe-Cr-Mn. Some sections in the phase diagrams of the Cr-Mn-C and Fe-Cr-Mn-C systems and partitioning of alloying elements between solid solution and carbide phases were calculated and presented for comparison with relevant experimental data.

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