This paper investigates the fracture process featured wide triaxiality range (− 0.1, 2/3), with varied fracture mode observedby fractography. The micro fracture mode changes from shear fracture in low triaxiality to dimple rupture in high triaxiality. The fracture locus (fracture strain vs. triaxiality) exhibits complex trends, containing increased fracture strain in negativetriaxiality. Hardening behavior is calculated by classic J2 flow theory and the Ludwig hardening law. Coupling process ofsoftening and fracture are represented by the GISSMO model. The deforming and the coupling process are solved by 2Dand 3D finite element method by LS-Dyna/Explicit. Good agreements are observed between experimental and numericalresults in tensile tests, punch tests and three points bending tests, verifying that the GISSMO model and Ludwig hardeninglaw can be used in deforming and fracture process for 7003 alloy. Numerical predictions on perforated beam bending showsthat the opening can change the cracking position, increases the ultimate strength and decreases the deflection.