THE ANNEALING OF IRRADIATION DAMAGE IN ZIRCALOY-2 AND THE EFFECT OF HIGH TEMPERATURE IRRADIATION ON THE TENSILE PROPERTIES OF ZIRCALOY-2
Tensile specimens of annealed and cold-worked Zircaloy2 were irradiated at 380 tained C with 9.5 x 10//sup 19/ n/cm/sup 2/ and tested at room temperature. Annealed samples of Zircaloy-2, irradiaied at 280 tained C with 7.7 x 10/sup 19/ n/cm/sup 2/ and at 50 tained C with 9.1 x 10/sup 19/ n/cm/sup 2/, were given isothermal and isochronal post-irradiation anneals and then tested at room temperature. The annealed and cold-worked specimens irradiated at 380 tained C exhibited only a small amount of radiation damage in contrast to specimens irradiated at or below 280 tained C which experienced considerable irradiation hardening. Results on the cold-worked material irradiated at 380 tained C indicated that the amount of normal thermal recovery of cold-work which occurred during the irradiation was virtually identical to that which occurred during an out-pile analysis of the post- irradiation annealing data for the 50 and 280 tained C irradiations revealed that in both cases the radiation damage anneals out in the range 250 to 400 tained C and is characterized by a single activation energy of approximately 2 ev throughout this range. (auth)
- Research Organization:
- Atomic Energy of Canada Ltd., Chalk River, Ont.
- NSA Number:
- NSA-14-019499
- OSTI ID:
- 4182477
- Report Number(s):
- CRMet-922; AECL-1024
- Country of Publication:
- Canada
- Language:
- English
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