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Diffusion and Microstructure Analysis
- Prof. Dr. Gerhard Wilde
- Prof. Dr. Sergiy Divinski
- Dr. Harald Rösner
The ASG employs a range of complementing experimental analyses methods concerning the underlying physical mechanisms and microstructural origins of macroscopic materials behavior. Specific emphasis is on the coupled analysis of grain boundary diffusion, detailed characterization of the atomic structure of these internal interfaces, and microstructure evolution in deformed materials.
Other focus points are related to the analysis of defects and defect interactions by combining electron microscopy on different length scales with calorimetry and atomic mobility analyses. Moreover, nucleation and growth phenomena as well as phase transformations are in the center of interest.
Our experimental analyses serve to generate input data for the modeling work on different length scales at ICAMS. Furthermore, it serves for in-depth comparison with and critical verification of the results obtained by computational analyses. Examples for collaboratively addressed topics are:
- Defect dynamics at precipitates in severely deformed Al-based alloys
- Grain boundary diffusion in ferromagnetic steels
- Oxidation and nitridation kinetics of ODS steel
- Recrystallization and grain growth in severely deformed Ni