Results 251 to 260 of about 23,999 (306)
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Irradiation hardening in F82H irradiated at 573K in the HFIR
Journal of Nuclear Materials, 2011Post-irradiation tensile tests were conducted on alloy F82H and variants of this steels irradiated at 573 K up to 19 dpa in the High Flux Isotope Reactor (HFIR) in Oak Ridge National Laboratory. Post-irradiation tensile and hardness tests revealed that the strength of F82H steeply increased below 5 dpa, and the total elongation decreased. The ductility
T. Hirose +6 more
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Irradiation hardening in columbium
Acta Metallurgica, 1963Abstract The influence of neutron irradiation on strength and ductility of columbium has been studied as a function of grain size and irradiation temperature (77°–330°C). Irradiation-induced hardening has been analyzed in terms of σi, the frictional stress opposing the motion of dislocation, and the constant ky as determined from both a Petch-type ...
P.R.V. Evans +2 more
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Irradiation hardening in copper and nickel
Acta Metallurgica, 1960Abstract The lattice and dislocation components of irradiation hardening have been measured in polycrystalline copper and nickel as a function of 1. (a) testing temperature and 2. (b) neutron dose. The results are compared with Seeger's theory of lattice hardening, which is based on dislocations cutting through a forest of obstacles under ...
M.J. Makin, F.J. Minter
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The hardening of copper by neutron irradiation
Philosophical Magazine, 1959Copper wires of 0.060 in. diameter were irradiated at 50 deg C for 1 to 3 weeks. At a fixed neutron dose and testing temperature the yield stress of irradiated polycrystalline copper increases within accuracy limits of experimental measurements. Lattice friction hardening and source hardening proceed simultaneously.
M. A. Adams, P. R. B. Higgins
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Electron irradiation hardening of aluminum
Acta Metallurgica, 1964Abstract A study has been made of the effects of electron irradiation at 77°K on the yield stress of Al. For integrated fluxes up to 1.35 × 1018 electrons/cm2, the increase in yield stress, Δτ, has been found to exhibit a 1 2 - power dependence on the defect concentration. The increase in yield stress which is incurred upon irradiation at 77°
D Keefer, A Sosin
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Precipitation and irradiation hardening in iron
Philosophical Magazine, 1961Abstract Precipitation of carbon from α-iron during irradiation and thermal ageing has been studied using thin film electron transmission microscopy. During irradiation at 100°c precipitates formed with a density of 2 × 1014 cm−3 and saturated at 400 A diameter after 72 hours in a flux of 1·5 × 1011 neutron cm−3 sec−1 > 1 MeV.
D. Hull, I. L. Mogford
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Assessment of irradiation hardening by DD simulations
Computational Materials Science, 2014Abstract Understanding of material degradation due to irradiation in structural materials of future reactors is of prime importance for current research as these materials are expected to operate at severe conditions of high temperature and high irradiation doses. The hierarchical multi-scale simulations act as supplement to the costly experiments on
P.V. Durgaprasad, B.K. Dutta, R.K. Singh
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Modeling of irradiation hardening of polycrystalline materials
Computational Materials Science, 2011High energy particle irradiation of structural polycrystalline materials usually produces irradiation hardening and embrittlement. The development of predictive capability for the influence of irradiation on mechanical behavior is very important in materials design for next-generation reactors.
Dongsheng Li +4 more
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physica status solidi (b), 1965
AbstractA model is proposed to explain the formation of slip lines in irradiated copper crystals during the propagation of the Lüders front. In this model it is shown that, due to the sweeping up of the irradiation produced defect clusters by deformation, the critical stress to produce a slip line is that required to operate the source in producing the
M. J. Makin, J. V. Sharp
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AbstractA model is proposed to explain the formation of slip lines in irradiated copper crystals during the propagation of the Lüders front. In this model it is shown that, due to the sweeping up of the irradiation produced defect clusters by deformation, the critical stress to produce a slip line is that required to operate the source in producing the
M. J. Makin, J. V. Sharp
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Effect of irradiation with electrons on the hardenability of steel
Metal Science and Heat Treatment, 19721. The hardenability of steel after irradiation with relativistic electrons at austenite equilibrium temperatures and in the process of cooling increases substantially. 2. The effect obtained indicates the formation of fairly stable pairs of vacancies and carbon atoms from excess vacancies of radiation origin and interstitial atoms of ...
M. A. Krishtal +2 more
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