Application of a Kinematic Transformation Model to Heat Transfer and Thermal Stress Analysis

A kinetic model of phase transformation derived statistically from experimental results has been introduced to analyze thermal stresses in a steel plate under the thermo-mechanical control process. The method enables us to predict the stresses more accurately than the conventional method which treats the latent heat of phase transformation as a time-independent function of temperature. By using the method developed in this paper, it was shown that instability of plate flatness in the thermo-mechanical control process is induced by phase transformation and occurs in a heavy plate with thickness about 20mm.