Calculation of phase equilibria in Ti-Al-Cr-Mn quaternary system for developing lower cost titanium alloys

► This paper is about the concept of designing the lower cost titanium alloy. ► The thermodynamic database of Ti-Al-Cr-Mn system is built up by Calphad method. ► The pseudobinary sections with Cr: Mn = 3:1 and Al = 3, 4.5 and 6.0 wt% are calculated. ► This may provide the theoretical support for designing the lower cost titanium alloy.