Abstract
Observations of irradiation creep strain as well as irradiation growth strain and related microstructures are reviewed and compared to mechanisms for radiation effects on time-dependent deformation. Composition, microstructure, stress, and temperature affect irradiation creep less than thermal creep. Irradiation creep rates can often dominate thermal creep rates, particularly at low temperatures and low stresses. Irradiation creep mechanisms are classified in two general categories: (1) stress-induced preferential absorption and (2) climb glide. In the former, creep results from dislocation climb, whereas in the latter, creep results from dislocation glide. The effects of irradiation creep on failure modes in nuclear environments are discussed.
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This paper is based on a presentation made in the symposium “Irradiation-Enhanced Materials Science and Engineering” presented as part of the ASM INTERNATIONAL 75th Anniversary celebration at the 1988 World Materials Congress in Chicago, IL, September 2–29, 1988, under the auspices of the Nuclear Materials Committee of TMS-AIME and ASM-MSD.
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Simonen, E.P. Radiation effects on time-dependent deformation: Creep and growth. Metall Trans A 21, 1053–1063 (1990). https://doi.org/10.1007/BF02656526
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DOI: https://doi.org/10.1007/BF02656526