Thermodynamic behaviour of bulk metallic glasses

The thermodynamic behaviour of bulk metallic glass forming melts have been studied by analyzing the temperature dependence of the Gibbs free energy difference Delta G, entropy difference Delta S and enthalpy difference Delta H between the undercooled melts and corresponding equilibrium solid phases. The study is made by calculating Delta G, Delta S and Delta H in the entire temperature range T-m to T-g for five samples Mg65Cu25Y10. Cu47Ti34Zr11Ni8, Zr46Cu46Al8,Zr-46(Cu4.5/5.5Ag1/1.5)(46)Al-8, Zr57Cu15.4Ni12.6Al10Nb5 and it is found that the calculated values of these thermodynamic parameters are very close to the experimental values, where T-m and T-g are melting temperature and glass transition temperature, respectively. (C) 2011 Elsevier B.V. All rights reserved.