Abstract
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.
Highlights
Differential scanning calorimeter (DSC) measurements were performed during the annealing of the amorphous alloys on a power compensated Perkin Elmer differential scanning calorimetry (DSC)-7
A non-isokinetic approach has been performed to study transformations with abrupt changing of DSC peaks for isochronally conducted transformation
The following conclusions can be drawn: (1) A different analytical model based on non-isokinetics was proposed to describe real transformations with a growth exponent d/m < n < d/m + a
Summary
A Non-Isokinetic Approach for Modeling Solid-StateTransformations: Application to Crystallization of a Fe-B AmorphousAlloy. Transformations: Application to Crystallization of a Fe-B Amorphous. Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.
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