Thermodynamic assessment of the ternary Ni–Ti–Cr system

Thermodynamic assessment of the ternary Ni–Ti–Cr system was done in this work. In previous literature only four isothermal sections and one vertical section were found so a complete assessment has been performed and several parameters have been optimized. No ternary compounds were observed in this system. The assessed interaction parameters have lead to the sections of phase diagram well correlated with the experimental points. Liquidus projection has been also calculated and the challenges in several equilibria boundaries determination have been outlined and discussed.

► The complete Ni–Ti–Cr system was thermodynamically assessed.
► In the Ni3Ti compound all sublattices have been included into calculations.
► The Ni2Cr (OP6) phase has been added as a stoichiometric compound.
► A reasonable evaluation of the Ni–Ti–Cr system was obtained with 11 different phases.