AME MODELLING THE MECHANICAL BEHAVIOUR OF STEELS WITH MIXED MICROSTRUCTURES

The present work describes the methodology that has been followed in order to model the flow curves for mixed steel microstructures. As a first stage, a physically based model has been developed in order to predict the mechanical behaviour of different steel micro-constituents. Nan hardness tests have been used in order to check the accuracy of such predictions when applied to each micro-constituent in the mixed microstructure. An auto consistent model has been feed with such formulas and applied to mixed microstructures. The results have been checked against tensile curves and the experimental determination of the strain partitioning allowed investigating the validity of the predictions.