In-situ TEM irradiation creep experiment revealing radiation induced dislocation glide in pure copper
(2021) Acta Materialia — Vol. 216, p. 117096 (2021)
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- Authors
Onimus, Fabien 
Jublot-Leclerc, Stéphanie Jourdan, Thomas
- Abstract
- In-situ TEM straining experiments were performed on pure copper to investigate the dislocation activity under heavy ion irradiation and high applied stress levels. The unpinning of dislocations from irradiation defects followed by glide was observed under irradiation at stress levels just below the critical stress for dislocation glide without irradiation. This phenomenon, unraveled for the first time in copper, has been statistically analyzed using digital image processing. Quantitative analysis of pinning lifetimes has been performed, suggesting that a cascade related mechanism is operative to explain the radiation induced dislocation glide. This work provides new insights on the irradiation creep deformation at high stress level.
- Affiliations
Université Paris-Saclay CEA, Service de Recherches Métallurgiques Appliquées Université Paris-Saclay CNRS/IN2P3, IJCLab Université Paris-Saclay CEA, Service de Recherches de Métallurgie Physique Université Grenoble Alpes Science et ingénierie des Matériaux et Procédés (SIMAP)
Citations
Khiara, N., Onimus, F., Jublot-Leclerc, S., Jourdan, T., Pardoen, T., Raskin, J.-P., & Bréchet, Y. (2021). In-situ TEM irradiation creep experiment revealing radiation induced dislocation glide in pure copper. Acta Materialia, 216, 117096. https://doi.org/10.1016/j.actamat.2021.117096 (Original work published 2021)