DFG-Project: Fatigue crack growth behavior in Inconel 718 after mechanical surface treatments

• Characterization of surface states after mechanical surface treatments and their stability under thermal and cyclic loading

• Development of appropriate test facilities to conduct lifetime estimation and fatigue crack propagation measurements at elevated temperature in the LCF range

• Development of a model for lifetime prediction in dependence of the residual stress and the strain hardening state based on fracture mechanics