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Bubble Formation in Zr Alloys Under Heavy Ion Implantation

Published online by Cambridge University Press:  21 February 2011

Luciano Pagano Jr. ,
Arthur T. Motta  and
Robert C. Birtcher
Luciano Pagano Jr.
Affiliation:
Dept. of Nuclear Engineering, Pennsylvania State University, University Park, PA, 16802 USA
Arthur T. Motta
Affiliation:
Dept. of Nuclear Engineering, Pennsylvania State University, University Park, PA, 16802 USA
Robert C. Birtcher
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
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Abstract

We report here the results of a study conducted to examine the effect of Kr ion irradiation on bubble formation in Zr alloys. We used the HVEM/Tandem facility at Argonne National Laboratory to irradiate several Zr alloys, including Zircaloy-2 and Zircaloy-4, at temperatures from 300 to 800 C and to doses up to 2 × 1016ion.cm−2. Both in-situ irradiation of thin foils as well as irradiation of bulk samples with an ion implanter were used in this study. For the thin foil irradiations, a distribution of small bubbles in the range of 30-100 Å was found, at all temperatures with the exception of the Cr-rich Valloy where bubbles of 130 Å were found. The irradiation of bulk samples at high temperature (700–800 C) produced large faceted bubbles (up to 300 Å) after irradiation to 2 × 1016ion.cm−2. The results are examined in the context of existing models for bubble formation and growth in other metals.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 398: Symposium C – Thermodynamics and Kinetics of Phase Transformations , 1995 , 201
Copyright
Copyright © Materials Research Society 1998

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References

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