Deformation of neutron-irradiated copper single crystals

Abstract

The deformation of neutron-irradiated copper single crystals has been studied by transmission electron microscopy techniques. The width of the defect-free channels formed by the passage of dislocations has been measured as a function of temperature, dose and strain, in sections cut normal to the primary glide plane. The width and spacing of the channels have also been compared with surface replicas. Sections parallel to the primary glide plane have also been examined to provide details of the dislocation structure within a channel. The formation and development of the channels are discussed and the destruction of loops by dislocations is examined. The deformed state of neutron-irradiated crystals is compared with that of unirradiated crystals.