Study of He-bubble growth in α-particle implanted F82H-mod martensitic steel

R. Coppola, M. Magnani, R.P. May, A. Möslang, M. Valli

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This paper presents the results of a small-angle neutron scattering (SANS) study of He-bubble growth in martensitic steel F82H-mod. The investigated samples had been homogeneously implanted with 400 appm He at 250 °C, then submitted to 2 h annealings up to 975 °C, together with a non-implanted sample of the same material (one for each temperature) serving as a reference to isolate the SANS signal arising from the He-bubbles. An as-implanted sample was also investigated together with its thermal reference. The He-bubble volume distributions, obtained from the SANS data and discussed with reference to uncertainties arising from background subtraction, show that the uniform distribution of the as-implanted sample, with bubbles approximately 15 angstroms in size, evolves during high temperature annealing into a bimodal one with a secondary population of bubbles as large as 100 angstroms approximately.
Original languageEnglish
Pages (from-to)183 - 187
Number of pages5
JournalJournal of Nuclear Materials
Issue numberPART I
Publication statusPublished - 2000
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Materials Science(all)

Cite this

Coppola, R., Magnani, M., May, R. P., Möslang, A., & Valli, M. (2000). Study of He-bubble growth in α-particle implanted F82H-mod martensitic steel. Journal of Nuclear Materials, 283-287(PART I), 183 - 187.