Computer simulations of phase transformation in steels

A comprehensive computer system for the material design of HSLA steels is been set up. As one sub-system, the phase transformation module was fundamentally set up based on the classical thermodynamic and kinetic theories. thermo-calc and dictra programs were used to construct the frame of the module. The γ→α phase transformation and the precipitation of microalloy-elements in austenite and during or after the transformation to ferrite in some steels were simulated. The results, compared with the experimental data, were satisfactory.