Abstract
The Ti–Al–Cr ternary system is one of the most important systems to studying the titanium alloys. Some experimental data of this ternary system are available and a few partial thermodynamic assessments are reported. However, no full thermodynamic descriptions were published. In this study, the previous work on the Ti–Al–Cr system and its related binary systems are reviewed. Based on the thermodynamic descriptions of the Ti–Al, Ti–Cr and Al–Cr systems and the ternary experimental data in literature, the Ti–Al–Cr ternary system is assessed by means of the Calphad method. Several isothermal sections from 1073 K to 1573 K and some invariant reactions are calculated, which are in good agreement with the most of the experimental results.
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