Abstract
The thermodynamic properties of the Cr-Fe-N system have been analyzed using thermodynamic models describing the Gibbs energy of the individual phases. A two-sublattice model has been used for the interstitial solution phases and a substitutional solution model for the liquid phase. The analysis involves a combination of predictions from recent assessments of the binary sides with computerized optimization of new ternary parameters. A set of parameters describing the Gibbs energy of the body-centered cubic (bcc), face-centered cubic (fcc), ∈, CrN, Fe4N, and liquid phases is given. Using this set of parameters, any type of phase equilibria can be calculated. A number of diagrams are presented comparing the results from the calculations with available experimental data, and the agreement is discussed. Most experimental data are well accounted for. The present study is also compared with a previous evaluation.
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Frisk, K. A thermodynamic evaluation of the Cr-Fe-N system. Metall Trans A 21, 2477–2488 (1990). https://doi.org/10.1007/BF02646992
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DOI: https://doi.org/10.1007/BF02646992