Investigation of the nucleation kinetics and the linear growth rate during the devitrification of Fe‐B amorphous alloys with the aid of a thermomagnetic balance

Abstract

AbstractThe kinetics of overall isothermal crystallization of the amorphous Fe75B25 alloy, as well as the kinetics of nucleation and growth in amorphous Fe75B25 and Fe80B20 alloys were investigated with the aid of a thermomagnetic balance. The activation energies of growth for both alloys QG = 167 kJ/mol, which are similar to these, found by other authors, were determined. Curves number of nuclei N vs time t were traced and the activation energy of nucleation in the amorphous alloy Fe80B20 was obtained QN = 211 kJ/mol, which value is also in very good agreement with those determined by means of other independent methods.