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Please use this identifier to cite or link to this item: https://dspace.ffh.bg.ac.rs/handle/123456789/1865
Title: Kinetics and mechanism of structural transformations of Fe <inf>75</inf>Ni<inf>2</inf>Si<inf>8</inf>B<inf>13</inf>C<inf>2</inf> amorphous alloy induced by thermal treatment
Authors: Minić, D. G.
Blagojević, V. A.
Mihajlović, Lj E.
Ćosović, V. R.
Minić, Dragica 
Keywords: Amorphous materials;Metallic glasses;Metals and alloys;Phase transition;Thermal analysis
Issue Date: 20-May-2011
Journal: Thermochimica Acta
Abstract: 
The kinetics of structural transformations of the Fe75Ni 2Si8B13C2 amorphous alloy under non-isothermal conditions was studied. It was shown that the amorphous alloy was stable up to 723 K, when multi-step structural transformations start, involving formation of stable α-Fe(Si) and Fe2B crystalline phases, and a metastable Fe15Si3B2 phase, their growth and the decomposition of the metastable phase into the two stable phases. Peakfit software was used to resolve the overlapping peaks corresponding to different crystallization steps, at different heating rates. The kinetic parameters corresponding to each of the steps were evaluated and kinetic triplet for every single step was established (g(α) = [-ln(1 - α)]1/3, Ea = 375.1 ± 0.8 kJ/mol and ln A = 56.2 ± 1.0 for step 1; Ea = 341.6 ± 0.5 kJ/mol and ln A = 49.3 ± 0.5 for step 2). The effects of structural transformations on the established kinetic model were discussed in detail. © 2011 Elsevier B.V.
URI: https://dspace.ffh.bg.ac.rs/handle/123456789/1865
ISSN: 0040-6031
DOI: 10.1016/j.tca.2011.02.040
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University of Belgrade
Faculty of Physical Chemistry
Studentski trg 12-16
11158 Belgrade 118
PAC 105305
SERBIA
University of Belgrade Faculty of Physical Chemistry