Crystallization Kinetics of the Fe68Nb6B23Mo3 Glassy Ribbons Studied by Differential Scanning Calorimetry

Fe-based metallic glass has wide industrial application due to its unique mechanical behavior and magnetic properties. In the present work, non-isothermal crystallization kinetics in Fe68Nb6B23Mo3 glassy alloys were investigated by differential scanning calorimeter (DSC). The results indicate that both transformation process display an obvious kinetic effect. activation energy is calculated using Kissinger’s method Ozawar’s method. for Tg (glass transition temperatures), Tx (crystallization initiation temperatures) Tp peak from Kissinger equation, 308 ± 4, 342 5 310 7 kJ mol?1, respectively. Tg, Ozawa equation 322 3, 356 325 With increase of volume fraction x, Avrami exponent n(x) first decreases then increases. At preliminary step, 0 < x 0.25, 2.5 4.0 stands growth a small size with increasing nucleation rate. When 0.25 0.71, 1.5, indicating this stage controlled particles decreasing