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Thermodynamic assessment of Be–Pu and Cd–Pu systems has been developed with the application of the CALPHAD (Calculation of Phase Diagrams) method, which is established on experimental data including thermodynamic properties and phase equilibria. The Gibbs free energies of the liquid, fcc, hcp, αPu, βPu, γPu, δPu, δ′Pu, and εPu phases were described by the subregular solution model with the Redlich–Kister...
The thermodynamic assessment of the Sb–Sm and Sm–Sn binary systems have been carried out by using the CALPHAD (CALculation of PHAse Diagrams) method on the basis of the experimental data including phase equilibria and thermodynamic properties. The Gibbs free energies of the solution phases (Liquid, Bcc, Bct, Hcp and Rhombohedral phase) were described by the subregular solution model with the Relich–Kister...
The phase equilibria in the Fe–Ni–V ternary system were investigated by means of electron probe microanalysis (EPMA) and X-ray diffraction (XRD). Three isothermal sections of the Fe–Ni–V ternary system at 1000°C, 1100°C and 1200°C were established. On the basis of the obtained experimental data, the phase equilibria in the Fe–Ni–V system were thermodynamically assessed using (CALculation of PHAse...
The thermodynamic parameters of Co–Re and Co–Ru systems were assessed using the CALPHAD technique. Based on various experimentally measured diffusivities and the thermodynamic parameters, the atomic mobility for the fcc phase of Ni–Co–X (X=Re, Ru) system was assessed using the DICTRA software. Comprehensive comparisons between calculated and experimental diffusion coefficients showed that the experimental...
By using the Calculation of Phase Diagrams (CALPHAD) technique, the thermodynamic assessments of the B–Re (Re: Ce, Pr) binary system were carried out based on the experimental data including thermodynamic properties and phase equilibria. Gibbs free energies of the solution phases (liquid, fcc, bcc, dhcp) were modeled by the subregular solution model with the Redlich–Kister equation, and those of the...
The atomic mobilities of the fcc Ni–Nb and Ni–Mo binary system have been assessed on the basis of the available kinetic information and given as functions of temperatures and composition in the CALPHAD format using the DICTRA software package in this work. Good agreement between the calculated and reported experimental diffusion coefficients is obtained. By using optimized mobility parameters, the...
The calculation model of the diffusion coefficient under an external magnetic field was presented. The self-diffusion coefficient in the αFe (bcc) phase and the diffusion coefficients of Ni and Co in the αFe phase were calculated. The calculated results indicate that the diffusion coefficient decreases with the decreasing of temperature and increasing of external magnetic field intensity. The kinetics...
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