Abstract
The current work aims to predict the flow behavior, plastic strain localization and plastic instability of dual phase (DP) steels. A microstructure based approach by means of representative volume element (RVE) is employed for this purpose. Dislocation based model is implemented to predict the flow behavior of the single phases. Ductile failure of DP steel is predicted in the form of plastic strain localization which arises due to incompatible deformation between the hard martensite and soft ferrite phases. Different failures modes arise from plastic strain localization in two DP steels are investigated on the actual microstructure by finite element method.
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