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This paper derives the relationships between void swelling and irradiation creep due to SIPA and SIG under cascade damage conditions in an irradiated pressurized tube. It is found that at low swelling rates irradiation creep is a major contribution to the total diametral strain rate of the tube, whereas at high swelling rate the creep becomes a minor contribution. The anisotropy of the corresponding dislocation structure is also predicted to decline as the swelling rate increases. The theoretical predictions are found to agree very well with experimental results.
Irradiation creep, void swelling, cascade damage, production bias, SIPA, SIG, creep cessation
Reactor Materials Research Branch, Whiteshell Laboratories, Pinawa, Manitoba
Pacific Northwest Laboratory, Richland, WA
Reactor Materials Research Branch, Chalk River Laboratories, Chalk River, Ontario