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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.

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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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