Bubble-to-void transition promoted by oxide nanoparticles in ODS-EUROFER steel ion implanted to high He content - Archive ouverte HAL Access content directly
Journal Articles J.Nucl.Mater. Year : 2021

Bubble-to-void transition promoted by oxide nanoparticles in ODS-EUROFER steel ion implanted to high He content

V.A. Borodin
  • Function : Author
M.G. Ganchenkova
  • Function : Author
P.V. Vladimirov
  • Function : Author
P.S. Dzhumaev
  • Function : Author
I.A. Golovchanskiy
  • Function : Author
R. Lindau
  • Function : Author
A. Möslang
  • Function : Author

Abstract

The paper deals with a detailed study of He-filled cavity ensemble development in ODS-EUROFER steel implanted with 10 keV helium ions to a high peak concentration of 8.5 × 10 3 appm both with and without simultaneous irradiation with 4 MeV gold ions, which allowed us to strongly vary the ratios of dpa/He introduction. The subsequent transmission electron microscopy examination reveals excellent radiation stability of He-implanted sample in the single-beam implantation mode. In contrast, after the simultaneous dual-beam irradiation a bubble-to-void transition was observed for bubbles that were associated with yttria nanoparticles. The relative importance of different He bubble families observed in the He-implanted samples for the swelling accumulation is quantitatively assessed, emphasizing the potential risks of abrupt swelling acceleration in the case of bubble-to-void transition launched by nanoparticles. A model of bubble-to-void transition for gas bubbles associated with spherical second-phase particles is developed and used to rationalize experimental observations.
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Dates and versions

hal-03098909 , version 1 (24-08-2021)

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O. Emelyanova, A. Gentils, V.A. Borodin, M.G. Ganchenkova, P.V. Vladimirov, et al.. Bubble-to-void transition promoted by oxide nanoparticles in ODS-EUROFER steel ion implanted to high He content. J.Nucl.Mater., 2021, 545, pp.152724. ⟨10.1016/j.jnucmat.2020.152724⟩. ⟨hal-03098909⟩
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