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THE EFFECT OF NUCLEAR RADIATION ON STRUCTURAL METALS
BATTELLE MEMORIAL INST COLUMBUS OHIO RADIATION EFFECTS INFORMATION CENTER
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The effect of fast-neutron 1 Mev irradiation on the mechanical properties of structural metals and alloys was studied. Although the yield strengths and ultimate tensile strengths are increased su stantially for most materials, the ductility suffers severe decreases. This report presents these changes in properties of several structural metals for a number of neutron exposures within the 1.0 x 10 to the 18th power to 5.0 x 10 to the 21st power nsq cm range. Data summarizing these effects on several classes of materials such as carbon steels, low-alloy steels, stainless steels, Zr-base alloys, ni-base alloys, Al-base alloys, and Ta are given. Additional data which show the influence f irradiation temperatures and of post-irradiation annealing on the radiation-induced property changes are also given and discussed. Increases as great as 175 in yield strength, 100 in ultimate strength, and decreases of 80 in total elongation are reported for fast-neutron exposures as great as 5 10 to the 21st power nsq cm. Author
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