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By means of CALPHAD (CALculation of PHAse Diagrams) approach, the phase diagram and thermodynamic data of the Gd–Ni system were critically assessed. The Gd–Ni system contains four solution phases (liquid, face-centered cubic FCC_A1, body-centered cubic BCC_A2 and hexagonal close-packed HCP_A3) modeled with the Redlich-Kister polynomials and seven intermetallic compounds Gd 3 Ni, GdNi, GdNi 2 , GdNi 3 , Gd 2 Ni 7 , GdNi 5 and Gd 2 Ni 17 , which are all treated as stoichiometric compounds. A set of self-consistent thermodynamic parameters describing various phases in this binary system was obtained. The phase diagram and thermodynamic quantities calculated from assessed parameters agree well with experimental data. |
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