Research

The research group "Microstructure – Mechanics" investigates the interactions between microstructural and mechanical parameters on the mesoscopic length scale of materials. The microstructure of steel has a significant influence on its effective properties. For example, a high number of internal interfaces in the microstructure leads to improved strength. The aim of the research is to contribute to the development of cost-effective, environmentally friendly and sustainable steel production through an adapted microstructure.

The adaptation of mechanical properties by microstructural refinement is investigated using multiphase-field simulations on the example of nanostructured bainite. The physical processes at the interfaces are investigated by integrating mainly mechanical and chemical driving forces. The following issues will be focused on:

Modeling and simulation:

Chemo-mechanical coupling in multiphase-field models
Investigation of different coupling approaches
Development of standardized benchmark tests for chemo-mechanically coupled phase-field models
Chemo-mechanically coupled modeling of solid-solid phase transformations in steels
Microstructure simulations using the multiphase-field method

Publications

Microstructure evolution accounting for crystal plasticity in the context of the multiphase-field method
Kannenberg, T.; Schöller, L.; Prahs, A.; Schneider, D.; Nestler, B.
2024. Computational Mechanics, 74, 67–84. doi:10.1007/s00466-023-02423-7

Investigation of microstructure evolution accounting for crystal plasticity in the multiphase‐field method
Kannenberg, T.; Schöller, L.; Prahs, A.; Schneider, D.; Nestler, B.
2023. PAMM, 23 (3), Art.-Nr.: e202300138. doi:10.1002/pamm.202300138