Article ID Journal Published Year Pages File Type
1566905 Journal of Nuclear Materials 2011 4 Pages PDF
Abstract

The effects of neutron irradiation to a dose of 3 dpa at 600 °C and creep for 38,555 h at 800 °C on the microstructure of a commercial MA957 alloy were investigated by atom probe tomography. The size, number density and composition of the 2-nm-diameter Ti-, Y-, O-enriched nanoclusters were similar in the unirradiated, crept and neutron irradiated conditions indicating that the microstructure of this nanostructured ferritic alloy has remarkable tolerance to radiation damage.

► The effects of irradiation and creep on the microstructure of a MA957 alloy were investigated by APT. ► Conditions were neutron irradiation to a dose of 3 dpa at 600 °C and creep for 38,555 h at 800 °C. ► No significant changes were observed in the size distribution or number density of the nanoclusters. ► Results indicate that the NFA microstructures have a remarkable tolerance to extreme conditions.

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Physical Sciences and Engineering Energy Nuclear Energy and Engineering
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