Static Unified Inelastic Model: pre- and post-yield dislocation-mediated deformation

Modelling dislocation glide over the initial part of a stress–strain curve metals received little attention up to now. However, is essential ones understanding fundamental relationship between inelastic deformation and evolution network structure. Therefore, we present model dislocation-driven under static loading conditions. We reproduce repeated cyclic uniaxial tensile tests on Interstitial-Free Low-Alloy steels. The elastic mechanical behaviour described by isotropic linear elasticity, pre-yield anelastic bow-out with dissipation, post-yield structure statistical storage model. hypothesise that when local compliance lower than global plastic compliance, mechanically recoverable, vice versa. This hypothesis corroborated classical Taylor relation. report relation stable unstable using this prototypical modelling framework. find four structural variables, are based physics, describe curve: total density, average segment length, junction formation rate, length. Firstly, quantify during monotonic loading, verify work-hardening Taylor-type equation for flow. Finally, semi-empirical Which allows us to: refine physical interpretation relationship, rationalise experimental observations apparent modulus degradation thermomechanical processing. Both these findings circumvent limitations current, physics-based hardening models.