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Thermodynamic modeling of the Ce–Zn and Pr–Zn systems |
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| Authors: | CP Wang X Chen XJ Liu FS Pan K Ishida |
| Affiliation: | aDepartment of Materials Science and Engineering, College of Chemistry and Chemical Engineering, and Research Center of Materials Design and Applications, Xiamen University, Xiamen 361005, PR China bCollege of Materials Science and Engineering, Chongqing University, Chongqing 400045, PR China cDepartment of Materials Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan |
| Abstract: | In order to develop the thermodynamic database of phase equilibria in the Mg–Zn–Re (Re: rare earth element) base alloys, the thermodynamic assessments of the Ce–Zn and Pr–Zn systems were carried out by using the calculation of phase diagrams (CALPHAD) method on the basis of the experimental data including thermodynamic properties and phase equilibria. Based on the available experimental data, Gibbs free energies of the solution phases (liquid, bcc, fcc, hcp and dhcp) were modeled by the subregular solution model with the Redlich–Kister formula, and those of the intermetallic compounds were described by the sublattice model. A consistent set of thermodynamic parameters has been derived for describing the Gibbs free energies of each solution phase and intermetallic compound in the Ce–Zn and Pr–Zn binary systems. An agreement between the present calculated results and experimental data is obtained. |
| Keywords: | Rare earth alloys and compounds Phase diagrams Thermodynamic modeling |
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