INTERSTITIAL-DISLOCATION INTERACTION IN NIOBIUM
Interstitial-dislocation interactions in niobium were investigated using the cold-work and Snoek internal friction peaks. Both the temperature of the cold-work peak and its height were found to depend on the amount of nitrogen removed from solution by dislocations in deformed specimens. Interstitial oxygen had only a minor effect and deformations beyond 5% were found to change the peak very little. The characteristics of the peak can be related to the interstitial content of the dislocation atmosphere and understood if these interstitials are assumed to interact to form clusters. These interstitial clusters relax in some cooperative manner which results in an order-of-magnitude increase in the relaxation strength per atom. (auth)
- Research Organization:
- Univ. of Illinois, Urbana
- NSA Number:
- NSA-17-035770
- OSTI ID:
- 4655800
- Journal Information:
- J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 18: Suppl. I
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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