Modelling of dissolution profiles of ordered particles under irradiation

C. Abromeit, E. Camus, Syo Matsumura

Research output: Contribution to journalConference articlepeer-review

7 Citations (Scopus)

Abstract

The interpretation of experiments on the stability of ordered precipitates in irradiation environments demands the detailed knowledge of the 3-d concentration profiles during the dissolution under the irradiation. They can be calculated by a numerical solution of the appropriate time-differential Ginzburg-Landau (TDGL) equations in adiabatic approximation. The profiles are used for the discussion of the experimentally investigated interdependence of dissolution and disordering of the ordered precipitates under irradiation by field-ion microscopy with atom probe (FIM-AP) and by transmission electron microscopy (TEM). Theoretical correlation coefficients are calculated for various composition profiles. By comparison with the correlation coefficients determined from the experimental FIM-AP data, the dissolution process could be identified. At low temperatures, the ballistic mixing is dominant and the precipitate dissolves by a normal diffusion process. At higher temperatures, the profiles have a non-Gaussian shape during dissolution.

Original languageEnglish
Pages (from-to)246-250
Number of pages5
JournalJournal of Nuclear Materials
Volume271-272
DOIs
Publication statusPublished - Jan 1 1999
EventProceedings of the 1997 8th International Conference on Fusion Reactor Materials (ICFRM-8), Part C - Sendai, Jpn
Duration: Oct 26 1997Oct 31 1997

All Science Journal Classification (ASJC) codes

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

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