Thermodynamic Description of Ternary Fe-B-X Systems. Part 3: Fe-B-Mn/ Opis Termodynamiczny Trójskładnikowych Układów Fe-B-X. Część 3: Fe-B-Mn

A thermodynamic optimization of the ternary Fe-B-Mn system is presented. The thermodynamic parameters of the binary sub-systems, Fe-Mn, Fe-B and B-Mn, are taken from earlier assessments slightly modifying the B-Mn system description. The thermodynamic parameters of the Fe-B-Mn system are optimized in this study using literature experimental thermodynamic and phase equilibrium data. The solution phases of the system are described using the substitutional solution model and the borides are treated as stoichiometric or semi-stoichiometric phases of the (A,B)pCq type described with the two-sublattice models.

Thermodynamic Assessment of SiO2-ZrO2 Binary System

The SiO2-ZrO2binary system has been thermodynamically assessed with CALPHAD approach. The substitutional solution model is adopted for liquid. A set of self-consistent parameters capable of reproducing the corresponding experimental phase diagram data and liquidus immiscibility data has been obtained.

Thermodynamic Assessment of B2O3-SiO2 Binary System

The B2O3-SiO2binary system has been thermodynamically reassessed with CALPHAD approach. The substitutional solution model is adopted for liquid. A set of self-consistent parameters capable of reproducing the corresponding experimental phase diagram data and subliquidus immiscibility data has been obtained.

Thermodynamic Description Of Ternary Fe-B-X Systems. Part 2: Fe-B-Ni

A thermodynamic description of the ternary Fe-B-Ni system is presented in the context of a new Fe-B-X (X = Cr, Ni, Mn, Si, Ti, V, C) database. The thermodynamic parameters of the binary sub-systems, Fe-B, Fe-Ni and B-Ni, are taken from earlier assessments slightly modifying the B-Ni description. Those of the Fe-B-Ni system are optimized in this study using experimental thermodynamic and phase equilibrium data from the literature. The solution phases of the system are described using the substitutional solution model and the borides are treated as stoichiometric or semi-stoichiometric phases of the (A,B)pCq type described with two-sublattice model.

Thermodynamic Description of Ternary Fe-B-X Systems. Part 1: Fe-B-Cr

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

Thermodynamic assessment of the Mg-Pb and Mg-Bi systems using substitutional solution and associate models for the liquid phase

By means of CALPHAD approach, thermodynamic assessments of the Mg-Pb and Mg-Bi systems were carried out based on the available experimental data including thermodynamic properties and phase equilibrium data. The liquid phase was described with both the substitutional solution model and the associate model, and two sets of self-consistent thermodynamic parameters for the Mg-Pb and Mg-Bi systems were obtained, respectively. It was found that the associate model can account for the experimental data more satisfactorily than the substitutional solution one, especially for the liquid phase with the short-range order behavior.

Thermodynamic Calculation of the Precipitate in Cu-Ni-Si-Co Alloys and Experimental Investigation

An initial thermodynamic modeling of the Cu-Ni-Si-Co system was built using CALPHAD approach. The liquid phase and terminal solid solutions were described by substitutional solution model, the nonlinear compounds used sublattice model and the other binary compounds were treated to be stoichiometric compounds. Based on the experimental conditions, the thermodynamic calculations were done to predict the stable precipitates of the alloys and investigated the effect of Co on the phase transitions. The experimental results showed an acceptable agreement with the calculation and verified the reliability of the Cu-Ni-Si-Co thermodynamic modeling.

Thermodynamic re-optimization of the Cu-Mg-Sn system at the Cu-Mg side

Thermodynamic description of the ternary Cu-Mg-Sn system at its Cu-Mg side is presented. The thermodynamic parameters of the binary sub-systems, Cu-Mg, Cu-Sn and Mg-Sn, are taken from the earlier SGTE-based assessments (modifying the Mg-Sn description slightly) and those of the Cu-Mg-Si system are optimized in this study using the experimental thermodynamic and phase equilibrium data. The solution phases of the systems are described with the substitutional solution model and the intermetallic Cu2Mg compound (Laves C15), treated as simple semi-stoichiometric phases of the (A,B)pCq type, is described with the twosublattice model. The present ternary description is valid for tin contents up to 45 wt% (xSn?0.30).