Irradiation effects on Fe distributions in Zircaloy-2 and Zr-2.5Nb
- Atomic Energy of Canada Ltd Research, Chalk River, Ontario (Canada). Chalk River Labs.
- CANMET, Ottawa, ON (Canada). Metals Technology Labs.
Irradiation of large-grained Zircaloy-2 (Zy) and Zr-2.5Nb (ZN) with 1.5 MeV Ar{sup +} ions to fluences of {approx} 10{sup 20}/m{sup 2} {equivalent_to} 10--30 dpa at 50, 300 and 420 C, leads to enhanced {alpha}-phase Fe dissolution. Electron microprobe analyses showed {alpha}-phase Fe levels of 25--1,500 ppma, compared to equivalent, non-irradiated state values of {approx} 70 ppma. In ZN the {beta}-phase Fe levels fell from about 6,000 to 3,500 ppma: this result accords, qualitatively, with the loss of Fe from the {beta}-phase following in-service neutron irradiation. Concentration vs depth measurements for Zy showed higher Fe levels towards the surface. Limited data for Ni in Zy show similar behavior.
- OSTI ID:
- 99439
- Report Number(s):
- CONF-941144--; ISBN 1-55899-275-8
- Country of Publication:
- United States
- Language:
- English
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