Crystallization kinetics of the Cu43Zr43Al7Ag7 amorphous alloy

The crystallization kinetics of the Cu43Zr43Al7Ag7 (at.%) amorphous alloy was studied by means of differential scanning calorimetry (DSC) in the continuous heating and isothermal annealing modes. In the case of continuous heating, the activation energy for crystallization corresponding to the first...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2007-03, Vol.449-451, p.561-564
Main Authors: PARK, S. O, LEE, J. C, KIM, Y. C, FLEURY, E, SUNG, D. S, KIM, D. H
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth from solid phases (including multiphase diffusion and recrystallization)
Materials science
Methods of crystal growth
physics of crystal growth
Physics
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Summary:The crystallization kinetics of the Cu43Zr43Al7Ag7 (at.%) amorphous alloy was studied by means of differential scanning calorimetry (DSC) in the continuous heating and isothermal annealing modes. In the case of continuous heating, the activation energy for crystallization corresponding to the first exothermal peak was significantly lower than that of the second peak. The isothermal kinetic, analyzed using the Johnson-Mehl-Avrami equation, yielded values of the Avrami exponents in the range 1.74-2.64, which implied that the first crystallization was governed by a three-dimensional diffusion-controlled growth.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2006.02.445