Mixing behaviour of Al–Ga–Mg alloys in liquid state at different temperatures

Le résumé fourni par la source

In the framework of Redlich–Kister (R–K) polynomials, both linear and exponential temperature-dependent energy interaction parameters for constituent binary subsystems of liquid Al–Ga–Mg alloys were optimised. These parameters were then used to estimate the excess Gibbs free energy of mixing, enthalpy of mixing and activity of the ternary system at 923 K, 973 K, 1023 K, 1073 K and 1123 K employing General Solution Model (GSM), Toop and Kohler models. The surface tensions of binary systems were calculated using Butler’s equations. The viscosity of binary subsystems was calculated employing Kaptay’s equations with the aid of exponentially optimised coefficients of R–K polynomials. Furthermore, the surface tension and viscosity of the ternary mixing were computed using aforementioned frameworks within the temperature range 923 K–1123 K. Theoretical investigation showed that the excess Gibbs free energy of mixing for the Al–Ga–Mg system was found to be negative, indicating a compound forming tendency.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.