A predictive model unifying hydrogen enhanced plasticity and decohesion

The detrimental effect of hydrogen on metals which manifests itself as a transition from ductile to brittle failure mode is, for the first time, incorporated into unified continuum-scale predictive framework. complete Gurson model, designed predict by voiding, is extended include decohesion. Hydrogen enhanced plasticity accounted through acceleration voiding process while induced decohesion realized degradation threshold. interplay between these two modes driven concentration are well captured. This model can realistic level embrittlement suppression dimples in fracture surface. Being generic, versatile, and easy implement, may serve basis interpretation laboratory experiments enable transferability results integrity assessment engineering components environment.