Abstract
The Ti–Cr–Mn ternary system is one of the most important systems in the development of low cost titanium alloys. However, there are few reports of assessment for this system. In this paper, the previous works for the Ti–Cr–Mn system and the related binary sub-systems are reviewed. The thermodynamic parameters of TiMn 3 and TiMn 4 in the Ti–Mn system are reassessed in order to better describe the phase equilibrium involving TiMn 3 or/and TiMn 4 in the ternary system. Based on the Ti–Cr and the Cr–Mn systems modeled in the literature and the Ti–Mn system reassessed in this work, the Ti–Cr–Mn ternary system is assessed by means of the Calphad method using the ternary experimental data in the literature. The 1173 K and 1273 K isothermal sections are calculated. It is shown that the present calculated results are in good agreement with most of the experimental results.
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