Deformation properties of shape memory steels prepared by additive methods.

Title: Deformation properties of shape memory steels prepared by additive methods. Author: Mykyta Vasylyk Department: Department of Physics of Materials Supervisor of the bachelor thesis: RNDr. Jan Čapek, Ph.D., Department of Physics of Materials Abstract: This bachelor's thesis focuses on understanding and providing a basic description of changes in microstructure and mechanical properties during the process of compression deformation of Fe-Mn-Si shape memory alloy. Effects of different surface preparation methods on microstructure were experimentally shown and discussed. X-ray diffraction and scanning electron microscopy measurements were performed to investigate phase transition during deformation. Microstructure evolution (together with crystallographic relations between phases and changes in phase textures) was observed using electron backscattered diffraction. Changes in macroscopic mechanical behaviour caused by phase transformations γ↔ε and ε→α' were described. Keywords: deformation, phase transformation, microscopy