Abstract
Based on the available literature experimental phase equilibria, the Ti-RE (RE = Ce, Er, Tm, Y) binary systems have been critically reviewed and modeled by means of the CALPHAD (CALculation of PHAse Diagram) method. No compound exists in these binary systems. The solution phases, i.e., liquid, bcc(βTi, δCe, βY), hcp(αTi, Er, Tm, αY) and fcc(γCe, γY), are described by the substitutional solution model. A set of self-consistent thermodynamic parameters is finally obtained for each of these binary systems. Comparisons between the calculated and measured phase diagrams show that most of the experimental data are satisfactorily accounted for by the present thermodynamic descriptions.
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