Enigma of dislocation patterning due to slip in fatigued austenite

摘要: Strain controlled low cycle fatigue experiments on multiple specimens are performed by systematically varying strain amplitudes of austenitic stainless steel under laboratory atmosphere. Different dislocation substructures/patterns developed due to cycling characterised, measured analytical transmission electron microscope and austenite grains’ misorientation, extent different types grain boundaries, connectivity, slip-system activity also backscatter diffraction experiments. Present investigation clearly reveals the enigma patterning through slip system during cyclic plastic deformation at amplitudes. It has been experimentally examined that with increase in amplitude, single decreases increases, which turn help decrease cell size vary their geometric configurations patterns.