Dual-phase steels exhibit good mechanical properties due to a microstructure of strong
martensitic inclusions embedded in a ductile ferritic matrix. This work presents a two-scale
model for the underlying work-hardening effects such as the distinctly different hardening
rates observed for high-strength dual-phase steels. The model is based on geometrically
necessary dislocations and comprises the average microstructural morphology as well as a direct
interaction between the constituents.
