Thermodynamic description of the Cr–Sn–Ti system

The Cr–Sn–Ti system was optimized by the means of the CALPHAD (CALculation of PHAse Diagram) technique. The solution phases (liquid, hcp, bcc and bct) were described by the substitutional-solution model. The compounds Sn3Ti2, Sn5Ti6 and Sn3Ti5 were treated as (Sn)m(Cr, Ti)n by a two-sublattice model in the Cr–Sn–Ti system. The compounds SnTi2 and SnTi3 were treated as (Sn, Va)1(Cr, Ti, Va)2 and (Sn, Va)1(Cr, Ti)3 by a two-sublattice model in the Cr–Sn–Ti system, respectively. The Laves phases αCr2Ti, βCr2Ti and γCr2Ti were described as (Cr, Sn, Ti)2(Cr, Sn, Ti)1 in the Cr–Sn–Ti system. A self-consistent thermodynamic description of the Cr–Sn–Ti system was obtained.