Abstract
The spatial distribution of plastic deformation around cleavage cracks formed by the precipitation of hydrogen gas was observed as dislocation etch pits in iron-silicon single crystals. It was found that the spatial distribution of dislocations can be explained by the calculated angular variation of the force on dislocations near the crack tip. The variation of plastic deformation with temperature and silicon content is consistent with the temperature and composition dependence of the critical resolved shear stress.
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