Abstract
The thermodynamic properties of the Nb-Ti system have been evaluated by using a regular solution model to describe the Gibbs energies of various phases including both equilibrium and metastable phases. A set of thermodynamic parameters more consistent with most of the selected experimental data than previous assessments has been obtained. Stable and metastable phase equilibria, T 0 loci, metastable chemical spinodal curve of β phase and thermodynamic properties are calculated with the optimized parameters. With the thermodynamic parameters obtained in this work, authors discuss the possible occurrence range of ω phase.
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