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Phase-field Simulation of Microstructures
Nowadays, the phase-field method allows to address not only generalized microstructure formation scenarios in a qualitative manner but also addressing real academic and industrial problems, showing good qualitative agreement with experimental observations. On top of that, the method provides access to the details of microstructure formation that are hard and some times not even possible to obtain experimentally.
This makes the phase-field method indispensable when studying complex transformations involving the simultaneous evolution of a number of relevant fields, e.g. temperature, composition, stress and strain as well as the microstructure itself. The quintessence of the transformation complexity can be attributed to the formation of bainite in steel where all fields mentioned above evolve simultaneously and have to be carefully considered. Together with the modeling of martensite formation the modeling of bainite formation in steel is one of our focus areas in ongoing research.
The group is developing an open source phase-field simulation library OpenPhase which is closely related to our scientific projects.
- Phase-field modeling
- Phase transformations
- Microscopic elasticity theory
- OpenPhase library development
- L. Huo, R. Schiedung, H. Li et al. Multi-phase field modeling and simulation of magnetically driven grain boundary migration in SmCo polycrystals. Journal of Physics D: Applied Physics, 56, 465003, (2023)
- M. Azadi Tinat, M. Uddagiri, I. Steinbach et al. Numerical simulations to predict the melt pool dynamics and heat transfer during single-track laser melting of Ni-based superalloy (CMSX-4). Metals, 13, 1091, (2023)
- M. Uddagiri, O. Shchyglo, I. Steinbach et al. Phase-field study of the history-effect of remelted microstructures on nucleation during additive manufacturing of Ni-based superalloys. Metallurgical and Materials Transactions A, 54, 18, (2023)
- Y. Jiang, M. Ali, I. Roslyakova et al. 3D phase-field simulations to machine-learn 3D information from 2D micrographs. Modelling and Simulation in Materials Science and Engineering, 31, 035005, (2023)
- M. Ali, O. Shchyglo, M. Stricker et al. Coherency loss marking the onset of degradation in high temperature creep of superalloys: phase-field simulation coupled to strain gradient crystal plasticity. Computational Materials Science, 220, 112069, (2023)
- M. Younan. Effect of composition on high temperature creep of ERBO Ni-based superalloys. Master Thesis, Ruhr-Univerisität Bochum, (2023)