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Radiation Growth of HCP Metals under Cascade Damage Conditions

Published online by Cambridge University Press:  13 February 2012

Stanislav I. Golubov ,
Alexander V. Barashev  and
Roger E. Stoller
Stanislav I. Golubov
Affiliation:
Materials Science and Technology Division, ORNL, Oak Ridge, TN 37831- 6138, USA Center for Materials Processing, Department of Materials Science and Engineering, University of Tennessee, East Stadium Hall, Knoxville, TN 37996-0750, USA
Alexander V. Barashev
Affiliation:
Materials Science and Technology Division, ORNL, Oak Ridge, TN 37831- 6138, USA Center for Materials Processing, Department of Materials Science and Engineering, University of Tennessee, East Stadium Hall, Knoxville, TN 37996-0750, USA
Roger E. Stoller
Affiliation:
Materials Science and Technology Division, ORNL, Oak Ridge, TN 37831- 6138, USA
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Abstract

Models of radiation growth proposed to date are all based on the assumption that the primary damage is produced by neutron irradiation in the form of single defects. These models do not account for the features of the cascade damage: intra-cascade clustering of self‑interstitial atoms (SIAs) and their one‑dimensional diffusion. During the last twenty years, a ‘Production Bias Model’ has been developed, which shows that the damage accumulation in cubic metals depends crucially on the cascade properties. The cascades in hcp zirconium are similar to those in cubic crystals; hence the model can provide a realistic framework for the hcp metals as well. In this work we present such a model in application to low-temperature (below 300°C) radiation growth.

Keywords

neutron irradiationradiation effectsnuclear materials
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1383: Symposium A – Material Challenges in Current and Future Nuclear Technologies , 2012 , mrsf11-1383-a09-08
Copyright
Copyright © Materials Research Society 2012

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References

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