Stress-relaxation ageing behavior and microstructural evolution under varying initial stresses in an Al–Cu alloy: Experiments and modeling

Complex curvature and/or high-stiffened components are often in the elastic-plastic deformation range during the loading stage of creep age forming (CAF) process. Effects of initial stress level, extending from 80 to 210 MPa (typically experienced by large-scale structural components), on the stress relaxation ageing behavior and microstructural evolution of AA2219 alloy have been experimentally investigated by means of stress relaxation ageing...