Influence of static strain aging on the cleavage fracture of a C–Mn steel

摘要: Recent advances in the constitutive modeling of strain aging effects elastoviscoplasticity are used to predict ductile-to-brittle transition curve for a C–Mn steel depending on pre-straining and heat treatment. The parameters Beremin model identified from large experimental basis Charpy tests. 3D finite element simulations V-notched specimens based accounting static aging, performed first time fracture behavior pre-strained aged material. includes localization phenomena occurring notch due Luders effects. Good agreement between experiment is demonstrated. introduction kinematic hardening improves prediction lower part region. proposed approach aims at optimizing pre-strain values treatments nuclear steels.