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Irradiation Effects on Fe Distributions in Zircaloy-2 and Zr-2.5Nb

Published online by Cambridge University Press:  16 February 2011

Heilong Zou ,
G.M. Hood ,
J.A. Roy  and
R.H. Packwood
Heilong Zou
Affiliation:
Reactor Materials Division, Atomic Energy of Canada Ltd Research, Chalk River Laboratories, Chalk River, ON, Canada, KOJ IJO
G.M. Hood
Affiliation:
Reactor Materials Division, Atomic Energy of Canada Ltd Research, Chalk River Laboratories, Chalk River, ON, Canada, KOJ IJO
J.A. Roy
Affiliation:
Reactor Materials Division, Atomic Energy of Canada Ltd Research, Chalk River Laboratories, Chalk River, ON, Canada, KOJ IJO
R.H. Packwood
Affiliation:
Metals Technology Labs, CANMET, Booth St, Ottawa, ON, Canada
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Abstract

Irradiation of large-grained Zircaloy-2 (Zy) and Zr-2.5Nb (ZN) with 1.5 MeV Ar+ ions to fluences of ≈ 1020/m2 (= 10-30 dpa) at 50, 300 and 420 °C, leads to enhanced ∝-phase Fe dissolution. Electron microprobe analyses showed ∝-phase Fe levels of 250-1500 ppma, compared to equivalent, non-irradiated state values of ≈ 70 ppma. In ZN the β-phase Fe levels fell from about 6000 to 3500 ppma: this result accords, qualitatively, with the loss of Fe from the β-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 behaviour.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 373: Symposium Y – Microstructure of Irradiated Materials , 1994 , 201
Copyright
Copyright © Materials Research Society 1995

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References

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