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| By using the Calculation of Phase Diagrams (CALPHAD) method, the thermodynamic assessments of the Mn-RE (RE: Sm, Ho) systems were carried out based on the experimental data including thermodynamic properties and phase equilibria. Gibbs free energie of the solution phase (liquid) was modeled by the subregular solution model and gibbs free energies of the solution phases (fcc, bcc, hcp, cbcc_A12 and cub_A13) were modeled by the regular solution model with the Redlich-Kister formula, and those of the intermetallic compounds (Mn23Sm6, Mn2Sm, HoMn2, Ho6Mn23, HoMn12) were described by the sublattice model. An agreement between the present calculated results and experimental data is obtained. |
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| Keywords:Rare earth alloys and compounds;Phase diagrams;Thermodynamic modeling |
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