ASPECTS ABOUT THE KINETICS AND THERMODYNAMIC TRANSFORMATION OF A SPECIAL S.G. CAST IRON

摘要

The paper presents an application for calculating the kinetics and thermodynamics parameters in the case of a phase transformation in solid state in A.D.I. S.G. grade. It is pointed out the influence of some factors (the temperature and the holding time at the isothermal level) on the phase transformation and properties in the studied cast iron. The kinetics of austenitization of S.G. Cast Iron, was described by the "Johnson-Mehl-Avrami" equation and for the determination of the activation energy "Q", it was used the "Arrhenius" equation.