Short-Range Order in a Ni63.7 Zr36.3 Amorphous Alloy. Effects of Structural Relaxation
An exothermic phenomenon, extending over a broad range of temperature, occurs during the first scan of the as-quenched sample. This effect is irreversible.
After prolonged annealing in a critical temperature range below (but close to) the glass transition temperature Tg, an endothermic peak is observed at Ta upon reheating : in the glass transition region the structural relaxation rate increases and the specimen rapidly readjusts towards the equilibrium state. The effect of initial annealing is eliminated but can be reproduced by repeated annealing.
KeywordsCrystallization Furnace Helium Calorimetry
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