Abstract
The characterisitics of the development of helium porosity in bcc and fcc alloys and structural steel after irradiation with 40-keV He+ up to dose 5⋅1020 m−2 at 20°C and subsequent annealing at 650°C for 1 h and 5 h are studied by transmission electron microscopy. It it found that under these conditions smaller bubbles with high density are formed in bcc than in fcc materials. It is shown that for an annealing time of 5 h higher porosity is formed in all materials, except nickel, than with 1 h annealing. This is due to the inflow of thermal vacancies from the free surface. The data obtained are discussed from the standpoint of the formation of various helium-containing complexes, their thermal stability, and the diffusion mobility of the matrix atoms.
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Translated from Atomnaya Energiya, Vol. 99, No. 2, pp. 115–120, August 2005.
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Binyukova, S.Y., Chernov, I.I., Kalin, B.A. et al. Formation of Helium Porosity in Different Materials during Post-Radiation Annealing. At Energy 99, 550–555 (2005). https://doi.org/10.1007/s10512-005-0245-z
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DOI: https://doi.org/10.1007/s10512-005-0245-z