Mechanism and kinetics of crystallization of α-Fe in amorphous Fe<inf>81</inf>B<inf>13</inf>Si<inf>4</inf>C<inf>2</inf> alloy

Abstract

The non-isothermal crystallization of α-Fe from Fe81B13Si4C2 amorphous alloy was investigated. The kinetic parameters of crystallization process were determined by Kissinger and Kissinger-Akahira-Sunose (KAS) methods. It was established that the kinetic parameters of transformation do not change with the degree of crystallization in the range of 0.1-0.7. The kinetic model of the crystallization process was determined using the Malek's procedure. It was established that the primary crystallization α-Fe phase from amorphous alloy can be described by Šesták-Berggren autocatalytic model with kinetic triplet Ea = 349.4.0 kJ mol-1, ln A = 50.76 and f(α) = α0.72(1 - α)1.02. © 2008 Elsevier B.V. All rights reserved.