Argonne National Laboratory
Reduced Enrichment for Research and Test Reactors
Nuclear Science and Engineering Division at Argonne
U.S. Department of Energy

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Abstracts and Available Papers Presented at the
1999 International RERTR Meeting

Calculation of the evolution of the fuel microstructure in UMo alloys and implications for fuel swelling

J. Rest, G. L. Hofman, I. Konovalov, and. A. Maslov


The evolution of a cellular dislocation structure and subsequent recrystallization have been identified as important aspects of the irradiated UMo alloy microstructure that can have a strong impact on dispersion fuel swelling.  Dislocation kinetics depends on the preferential bias of dislocations for interstitials compared to vacancies. This paper presents theoretical calculations for the evolution of a cellular dislocation structure, and recrystallization in U-10Mo.  Implications for fuel swelling are discussed.

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Jeffrey Rest
Argonne National Laboratory
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Last modified on July 29, 2008 11:34 +0200