Point Defect-Dislocation Interactions in Copper Following Pulsed Neutron and Electron Irradiations
Document Type
Article
Publication Date
1-1-1987
Identifier/URL
40892753 (Pure)
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Abstract
Two aspects of point defect-dislocation interactions, peaking effect and kinetics following pulsed electron and neutron irradiations have been studied in high-purity polycrystalline copper. In all experiments, an initial very rapid rise in the internal friction and Young's modulus was observed, followed by a slower continuous change. The rise of the internal friction shows the presence of the peaking effect. The magnitude of the rapid change in the modulus was proportional to the fluence. The initial rise was too fast for detailed kinetics analysis; however, the slower process was analysed. Results are interpreted in terms of a model wherein interstitials are rapidly deleted from the lattice and responsible for the initial rise, while the slower process is due to vacancy diffusion to dislocations. These data also show that interstitials are responsible for the peaking effect. Models proposed to explain the peaking effect are discussed in the light of these results.
Repository Citation
Parkin, D. M.,
Goldstone, J. A.,
Simpson, H. M.,
& Hemsky, J. M.
(1987). Point Defect-Dislocation Interactions in Copper Following Pulsed Neutron and Electron Irradiations. Journal of Physics F: Metal Physics, 17 (3), 577-592.
https://corescholar.libraries.wright.edu/physics/1147
DOI
10.1088/0305-4608/17/3/006
