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

Description: 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 interstitial 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.
Date: October 1, 1999
Creator: Rest, J.; Hofman, G. L.; Konovalov, I. & Maslov, A.
Partner: UNT Libraries Government Documents Department

Analysis of the swelling behavior of U-alloys

Description: Available data on two alloys from the EBR-II driver fuel development program have been utilized in the construction and validation of mechanistic models aimed at elucidating swelling mechanisms in high density uranium alloys. Swelling predictions are made under ATR conditions for U-10Mo fuels, currently under irradiation in the ATR, and for U-10Zr.
Date: October 1, 1997
Creator: Rest, J.; Hofman, G.L.; Coffey, K.L.; Konovalov, I. & Maslov, A.
Partner: UNT Libraries Government Documents Department