Choose Gibbs free energy difference model for metallic glasses

Abstract A method, namely the transition rule, for choosing the model of Gibbs free energy difference (ΔG) for metallic glass was proposed. The results show that the ΔG model of metallic glass can be reasonably chosen by the transition from a high ΔG model to a low ΔG model. The transition parameters are the reduced glass transition temperature Trg (= Tg / TL, Tg and TL are the glass transition temperature and liquidus temperature, respectively) and solidification temperature region ΔT (= TL − Tm, Tm is the solidus temperature). The Trg and ΔT values are also determined. In addition, the Trg is a main transition parameter for the eutectic and near-eutectic alloys. The less the ΔT, the stronger is the Trg. Otherwise, the transition is simultaneously controlled by the Trg and ΔT. The transition rule is reliable by the examination of currently available data.