Study on the crystallization mechanism of TiNiNb amorphous alloy

In order to study the crystallization mechanism of Ti44Ni47Nb9 amorphous alloy. Firstly, the Ti44Ni47Nb9 amorphous alloy was prepared by mechanical alloying (High energy ball milling). Then, the effect of amorphous mechanism and annealing process on the alloy was analyzed. The results showed that the crystallization effect of amorphous powder was the best, when the annealing process was 575 °C and the temperature was kept for 30 min. The glass transition temperature Tg, the initial crystallization temperature Tx and the peak crystallization temperature Tp all increased with the increase of the heating rate, showing obvious kinetic effects. The apparent activation energies of the glass transition, initial crystallization and crystallization peak were respectively 150.76, 146.57 and 331.74 kJ/mol by using the Ozawa equation.