Modeling of Phase Transformation Kinetics of Plain Carbon Steel

Abstract

A mathematical model have been generated which incorporates the concept of isothermal/isokinetic steps in close association with the cooling curve to predict the transformation kinetics under continuous cooling conditions. Transformation kinetics under actual cooling conditions was predicted by the dilatometric analysis of the 1080 steel samples. The continuous cooling experiments were conducted for cooling rates of 5, 10, 15, 200 K/min to determine the time and temperature for start and end of pearlitic transformation respectively. The isothermal transformation data was also incorporated in the mathematical model to predict the continuous cooling transformation kinetics. The results of the mathematical model agree closely and in a similar manner with the measurements made at the four cooling rates.