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3 Archives of Metallurgy and Materials

3 2019

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Thermodynamic Description of Ternary Fe-B-X Systems. Part 6: Fe-B-Ti

Miettinen J., Visuri V.-V., Fabritius T., Milcheva N., Vassilev G.

Archives of Metallurgy and Materials

2019

Vol. 64, iss. 4

1249--1255

Thermodynamic optimizations of the ternary Fe-B-Ti system and its binary sub-system, B-Ti are presented. The thermodynamic descriptions of the other binaries, Fe-Ti and Fe-B, are taken from the earlier studies slightly modifying the Fe-Ti system assessment. The adjustable parameters of the Fe-B-Ti and B-Ti systems are optimized in this study using the experimental thermodynamic and the phase equilibrium data from the literature. The solution phases of the system are described using the substitutional solution model and the compounds (including borides) are treated as stoichiometric phases. The results show a good correlation between the calculated and measured thermodynamic and phase equilibrium data.

Thermodynamic Description of Ternary Fe-B-X Systems. Part 5: Fe-B-Si

Miettinen J., Visuri V.-V., Fabritius T., Milcheva N., Vassilev G.

Archives of Metallurgy and Materials

2019

Vol. 64, iss. 4

1239--1248

Thermodynamic descriptions of the ternary Fe-B-Si system and its binary sub-system, B-Si, are developed in the context of a new Fe-B-X (X = Cr, Ni, Mn, V, Si, Ti, C) database. The thermodynamic parameters of the other binary sub-systems, Fe-Si and Fe-B, are taken from earlier assessments. Experimental thermodynamic and phase equilibrium data available in the literature has been used for the optimization of the thermodynamic parameters of the Fe-B-Si and B-Si systems. The solution phases are described using substitutional solution model and the compounds (silicides and borides) are treated as stoichiometric phases. The calculated and experimental thermodynamic and phase equilibrium data were found to be in good agreement.

Thermodynamic Description of Ternary Fe-B-X Systems. Part 4: Fe-B-V

Miettinen J., Visuri V.-V., Fabritius T., Milcheva N., Vassilev G.

Archives of Metallurgy and Materials

2019

Vol. 64, iss. 2

451--456

Thermodynamic descriptions of the ternary Fe-B-V system and its binary sub-system B-V, are developed using experimental thermodynamic and phase equilibrium data from the literature. The thermodynamic parameters of the other binaries, Fe-V and Fe-B, are taken from earlier assessments slightly modifying the Fe-V description. The work is in the context of a new Fe-B-X (X = Cr, Ni, Mn, V, Si, Ti, C) database. The solution phases are described using substitutional solution model. The borides are treated as stoichiometric or semistoichiometric phases and described with two-sublattice models.