Recent progress: kinetics of the bainite transformation in steels

There are two different approaches to model the kinetics of the bainite transformation. The diffusional growth model needs to adopt the solute drag effect, and a quantitative approach is proposed although the diffusion of substitutional alloying elements is not fully accepted experimentally. The nucleation-controlled model based on the displacive and diffusionless nature of the bainite transformation, combined with the kinetics of cementite formation in austenite and in ferrite as the simultaneous reactions.