Evaluation of semiphysical phase transformation model for engineering steels using measured continuous cooling transformation diagrams

A semiphysical model has recently been constructed by Parker that calculate s the phase transformation behaviour of engineering steels as a function of time for an arbitrary cooling path. To compare the model with measured dia grams from the literature for linear cooling, a large number of continuous cooling transformation (CCT) diagrams have been calculated. The quantified comparison has been used to construct heuristics that indicate the accuracy of the model as a function df the steel composition. For 10 allaying eleme nts the domain for which the model is valid has been established.