A non-isokinetic approach for modeling solid-state transformations: Application to crystallization of a fe-b amorphous alloy

Solid-state phase transformations like crystallization of amorphous alloys can be described by an analytical model incorporating a nucleation index a. However, this model cannot be used to examine isochronal transformations with abrupt changing of enthalpy differences performed with differential scanning calorimetry. Based on the model, a non-isokinetic approach is proposed and applied to analyze the isochronal crystallization kinetics of Fe₈₅B₁₅ amorphous alloy. The approach enabled us to obtain the kinetic parameters and activation energies for nucleation and growth.