Joining and Assessment
The Department of Joining and Assessment (WMF) studies laser materials processing of metallic lightweight engineering materials and their mechanical as well as metallographic characterization, with a particular emphasis on improving and optimizing their damage tolerance behaviour. In addition to investigating laser welding (Nd:YAG, CO2, fibre), modification processes such as laser heat treatment, laser shock peening, laser cladding and laser alloying are also studied in order to locally modify material properties and residual stress conditions.
Due to the complexity of interaction between Nd:YAG or CO2 laser radiation and the material, process development is supported using FEM methods. The combination of process modelling and modelling of mechanical fracture behaviour allows us to determine optimal process parameters and conditions for reproducible adjustments of local microstructural and residual stress states.