Theoretical modelling of ductile damage in duplex stainless steels - Comparison between two micro-mechanical elasto-plastic approaches

► Micro-mechanical models including damage provide very powerful modelling of forming processes. ► Damage coupling with physical phenomenon is done through thermodynamics. ► Damage mechanisms at several scales are taken into account through continuum damage mechanics. ► Two models are compared and exact damage relations are established in both models. ► Numerical aspects are investigates to identify with experimental results in duplex steels.