Experimentelle Gesteinsdeformation
Deformation processes in Geomaterials and their mutual overprints and influences are very hard to decipher in detail while they are active processes. Consequently material flow laws are imprecise in their physical description of the processes. The same applies to recrystallisation processes (under static conditions). To overcome this problem, complex deformation and recrystallisation devices have been developed for the neutron diffractometer POWTEX at the research reactor FRM II in Garching near Munich (MLZ reaseach center). The POWTEX diffractometer is also specifically designed to host these sample environments and to enable time-resolved in-situ deformation and recrystallisation experiments. Thereby texture (crystallographic preferred orientation) measurements are performed during the experiments and thereby the reaction of the material crystals on the deformation/recrystallisation can be monitored and evaluated under controlled conditions (Pressure, Temperature, Strain rate). The aim is to establish precise flow laws for material deformation.