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Thermally induced crystallization of amorphous Fe40Ni40P14B6 alloy
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SYSNO ASEP 0449814 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Thermally induced crystallization of amorphous Fe40Ni40P14B6 alloy Author(s) Vasić, M. (RS)
Blagojević, V. A. (RS)
Begović, N. N. (RS)
Žák, Tomáš (UFM-A) RID
Pavlović, V. B. (RS)
Minić, Dragica M. (RS)Number of authors 6 Source Title Thermochimica Acta. - : Elsevier - ISSN 0040-6031
Roč. 614, AUG (2015), s. 129-136Number of pages 8 s. Publication form Print - P Language eng - English Country NL - Netherlands Keywords Amorphous alloy ; Crystallization ; Kinetics ; Deconvolution ; Impingement ; Surface morphology Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects ED1.1.00/02.0068 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 UT WOS 000358809900018 EID SCOPUS 84933524732 DOI 10.1016/j.tca.2015.06.015 Annotation The crystallization mechanism and kinetics of Fe40Ni40P14B6 amorphous alloy were studied under non-isothermal conditions. Thermal stabilization of this alloy manifests in DSC through two complex peaks, corresponding to crystallization and recrystallization, respectively. The complex crystallization DSC peak was deconvoluted into individual steps corresponding to crystallization of individual phases, where the results using both Gaussian-Lorentzian cross-product and Fraser-Suzuki function were compared. It was determined that the values of kinetic triplets of the individual steps did not exhibit any significant difference, depending on the deconvolution function. Anisotropic growth was indicated to be the prevailing type of impingement for all crystallization steps. Using the calculated values of the respective kinetic triplets and the mechanisms determined from the value of Avrami exponent, distinct values of activation energies for nucleation and crystal growth for crystallization of each individual phase were calculated, showing significantly higher values for nucleation than those for crystal growth. Alloy samples treated non-isothermally in the DSC cell exhibit inhomogeneous surface morphology with highly granulated structure dependent on heating rate. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2016
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