ELECTRICAL RESISTIVITY RECOVERY IN COLD-WORKED AND ELECTRON-IRRADIATED NICKEL
Pure nickel wires were subjected to electron irradiation and cold work. Electrical resistivity recovery, starting at room temperature and extending to the recrystallization range, was studied. Recovery stages near 100 C (Stage III) and 270 C (Stage IV) were found to occur by a diffuslon process following cold work; dlslocatiors are believed to be the defect sinks. Stage III was found to obey a second-order chemical rate equation following irradiation; Stage IV is essentially absent. An activation energy for defect migration of about 1.05 ev was found in Stage III following both irradiation and cold work; the energy associated with defect migration in Stage IV is not as well determined. These measurements on nickel indicate that the defect migrating in Stage III is an interstitial atom in Stage IV, a vacancy. The close similarity between the recovery ln nickel and that in copper suggests a similar assignment in copper. ( auth)
- Research Organization:
- Atomics International Div., North American Aviation Inc., Canoga Park, Calif.
- NSA Number:
- NSA-13-021645
- OSTI ID:
- 4218366
- Journal Information:
- Acta Met., Journal Name: Acta Met. Vol. Vol: 7
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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