Dislocations and Deformation

This lecture covers the concept of dislocations in crystals, including edge and screw dislocations, dislocation movement, and the critical resolved shear stress. It also discusses the deformation mechanisms in single crystals and polycrystals, the Schmid factor, and the role of slip systems. The presentation delves into the observation of dislocations using transmission electron microscopy and the determination of the Burgers vector. Additionally, it explores topics such as dislocation interactions, hardening mechanisms, and the effects of obstacles on dislocation movement.