CRYSTALLIZATION KINETICS OF AMORPHOUS V47Ni32Ti21 ALLOY
METALURGIA INTERNATIONAL(2013)
摘要
The kinetics of crystallization of amorphous V47Ni32Ti21 alloy has been studied with the help of non-isothermal scanning experiments in a differential scanning calorimeter. The thermogramms at different scanning rates show a sharp crystallization peak and a clear glass transitions. A modified Kissinger method have been utilized to derive important kinetics parameters namely activation energy of crystallization Ec, Avrami exponent, n; and dimensionality of growth m. The results indicate bulk crystallization in the present amorphous alloy. The dimensionality of growth has been found to decrease with an increase in the heating rate.
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关键词
Amorphous alloy,Activation energy,Crystallization kinetics
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