STUDY KINETIC OF NONISOTHERMAL OF AUSTENITE TRANSFORMATION TO PEARLITE CK45 STEEL BY FLYNN METHOD

摘要

Kinetics has an important role on the microstructure and mechanical properties of the steels. In this study, the kinetics of austenite transformation to pearlite by Flynn model. Therefore, the austenite transformation to pearlite was investigated in condition a non-isothermal by DTA thermal analysis . Experiments of thermal analysis as a non-isothermal andwith cooling rates of 5, 10 and 20 C/Min were performed under argon atmosphere. Activation energy obtained as a kinetic parameters using the method of the Flynn free model. Results indicated, numericalvalues of activation .energy are in the range of 40.2-62.7 KJ/mol.