A THERMODYNAMIC ANALYSIS OF THE AL-RE SYSTEM

Phase equilibria and thermodynamic data of the Al-Re system are critic ally reviewed,In addition to the three solution phases, liquid, fcc Al , and hcp Re, there exist six intermetallic compounds in this binary. The thermodynamic properties of the system are analyzed using thermody namic models for the Gibbs energy of individual phases of the system. A regular solution model is used for the three substitutional solution phases, and the intermetallic phases are treated as stoichiometric co mpounds, The model parameters are optimized from a limited amount of e xperimental data. The calculated phase diagram and thermodynamic value s are in accord with the available experimental values.