NUCLEATION AND GROWTH ACTIVATION ENERGIES DURING CRYSTALLIZATION OF AMORPHOUS ALLOYS (Ⅱ)——RELATIONSHIP BETWEEN MICROSTFUCTURE OF AMORPHOUS STATE AND TEMPERATURE

By using the new method for determination of activation energies for nucleation andgrowth (E_n & E_g) developed in Part Ⅰ of this work, the E_n and E_g of some pre--annealedamorphous Ni--P alloys, as well as those of the as--quenched Ni--P glass within differenttemperature ranges are measured and studied. The results show that the values of E_n and E_gare closely related to the microstructure of amorphous alloys and the annealing temperature.The higher the ordering in the amorphous alloys, the smaller the values of E_n and E_g; thehigher the annealing temperature, the greater the E_n and E_g values. By means of the newlydeveloped crystallization micromechanism, such an experimental phenomenon which is diffi-cult to understand from the classical crystallization mechanism is reasonably explained.