Crack initiation at dislocation cell boundaries in the ductile fracture of metals

The investigation of the glide deformation in the necked region of single crystals by use of diffraction techniques and transmission electron microscopy has enhanced our understanding of the role of dislocation cell structures in stage III work hardening at the onset of fracture. In situ fracture studies in the high voltage electron microscope have provided of microcracks at cell boundaries in particle free single crystal materials. Because of...