The effects of vanadium in the crystallization kinetics amorphous ribbons Fe80-yVyB12Si8 (0.5 ≤ y≤ 15) has been investigated by Differential Scanning Calorimetry, by using the Avrami, Kolmogorov-Johnson-Mehl-Avrami, and Calka and Radlinski equations. The addition of vanadium to Fe-B-Si alloys leads to an enhancement of stability against crystallization, as shown by an increase in the effective activation energy for crystallization (Eeff = 3.6eV) and an increase in the temperature for the first crystallization peak, as a function of vanadium content (from 780 to 855K). Results also show that the crystallization mechanism, nucleation rate and dimensionality of growth are constant throughout the crystallization process in the composition range investigated.
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Authors thank Dr. R. Krishnan (CNRS France) for providing the amorphous samples, M. Reyes-Salas and S. Jiménez-Cortés for technical help, and DGAPA-UNAM for partial funding.
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Altúzar, P., Vázquez, C., Baños, L. et al. Crystallization Kinetics of Fe80-yVyB12Si8 Amorphous Ribbons. MRS Online Proceedings Library 321, 325–329 (1993). https://doi.org/10.1557/PROC-321-325