Simulated Isothermal Crystallization Kinetics from Non-Isothermal Experimental Data

Abstract

In the present work, a new simple and robust approach, named ‘simulated isothermal’ technique, is proposed for getting isothermal transformation behavior of crystallization of glassy alloys at temperatures well above the normal crystallization temperatures (Tx) from a set of non-isothermal differential scanning calorimetric (DSC) scans performed at different heating rates. The isothermal and simulated isothermal kinetic data for the crystallization of glassy alloys compare well. The problem of finding small heat change on crystallization during isothermal DSC scans below Tx is avoided in the present approach, since it uses non-isothermal DSC scans, which is associated with large heat change on crystallization. It also enables to get complete understanding of the mechanism of crystallization of glassy alloys.