Abstract
A new non-isothermal phase kinetic equation which keeps the form of Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation is established. This non-isothermal JMAK type equation is expressed asX(t)=1−exp[−(Kt)n],K=K0exp(−QRT0)T0 can be given a linear relationship with transformation temperature T in relatively large parameter fluctuation ranges. The applications of non-isothermal JMAK type equation in γ→α phase process of Fe-0.002wt%C alloy under linear cooling process and welding thermal process do show its good agreements with the experimental data.
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