Critical resolved shear stress

The critical shear stress is a term used in crystal mechanics. It represents the shear stress at which the transition from elastic to plastic deformation of the metal occurs. If the critical shear stress is exceeded in a lattice structure, so advised the atoms of a sliding system of sliding plane and sliding into the field of action of the adjacent lattice plane and thereby move by leaps and bounds (so-called dislocation motion ) to the next lattice site. Keep this place even after removal of the stress - deformation is thus plastically.