A multiscale constitutive model for metal forming of dual phase titanium alloys by incorporating inherent deformation and failure mechanisms

Abstract Ductile metals undergo a considerable amount of plastic deformation before failure. Void nucleation, growth and coalescence is the mechanism failure in such metals. ? – ? titanium alloys are ductile nature widely used for their unique set properties as specific strength, fracture toughness, corrosion resistance to fatigue failures. Voids these have been reported nucleate on phase boundaries between phase. Based findings crystal plasticity finite element method investigations void at interface phases, growth, model has formulated. An existing single-phase theory extended incorporate underlying physical mechanisms dual alloys. Effects various factors [stress triaxiality, Lode parameter, state (equivalent stress), boundary inclination] formulate phenomenological constitutive while interaction with conventional established. extensive parametric assessment carried out quantify understand effects material parameters overall response. Performance proposed then assessed verified by comparing results RVE study results. Application utilisation design optimisation forming process alloy components also demonstrated using experimental data.