Dislocation Loops in Irradiated Iron

IT has been suggested many times that the hardening of iron and steel on irradiation may result from the interaction of glide dislocations with dispersed clusters of point defects. Two observations of such clusters using the technique of transmission electron microscopy have been reported in the literature1,2. The work reported in this communication was undertaken to determine the crystallography of dislocation loops observed in pure iron.

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