Thermodynamic optimization of the Al–Yb binary system

A thermodynamic description of the Al–Yb binary system was developed based on critically evaluated experimental data by using CALculation of PHAse Diagram (CALPHAD) approach. Liquid (γYb) and (βYb) were modeled as substitutional solution phases. Al2Yb and Al3Yb were treated as stoichiometric compounds. A set of self-consistent parameters for describing various phases in this system was obtained, with which most of the experimental data reported in the literatures were well reproduced.