Abstract
The transient nucleation was a process to change a cluster distribution to the equilibrium distribution at the nucleation temperature. DTA measurement was performed for Li2OSiO2 glasses with different thermal history in order to invest the effect of their cluster distribution. Crystallization peak temperatures were used as a measure of the number density of nuclei. The glasses heat-treated before nucleation showed lower crystallization peak temperatures. The induction time for steady state nucleation was considered to become shorter by the preliminary heat-treatment.