Pre-Crystallization Criteria and Triple Crystallization Kinetic Parameters of Amorphous–Crystalline Phase Transition of As40S45Se15 Alloy

This framework focuses mainly on a detailed study of the pre-crystallization criteria that characterize As40S45Se15 glassy alloy in various heating rates ranging from 5 to 40 (K/min) by Differential Scanning Calorimetry (DSC). These aim clarify relationship tendency glass-forming rate for investigated alloy. The crystallization parameters were calculated using different methods.The activation energy Ec(?) as function conversion (?) was obtained iso-conversional models Flynn–Wall–Ozawa (FWO), Starink and Kissinger–Akahira–Sunose (KAS). results show slight increase with which accounts single-step mechanism controlling process. Moreever, dependence Avrami exponent n(?) an (?), average values can be accounted two three-dimensional crystal growth heterogeneous nucleation. On other hand, fitting experimental DSC data curves indicated process studied glasses cannot satisfactorily described Johnson–Mehl–Avrami (JMA) model. contrary (SB) model is more suitable describe Alloy. Finally, crystalline structure sample recognized X-ray diffraction (XRD) electron scanning microscope (SEM).