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 language | English |
|---|---|
| Pages (from-to) | 246-250 |
| Number of pages | 5 |
| Journal | Journal of Nuclear Materials |
| Volume | 271-272 |
| DOIs | |
| Publication status | Published - Jan 1 1999 |
| Event | Proceedings of the 1997 8th International Conference on Fusion Reactor Materials (ICFRM-8), Part C - Sendai, Jpn Duration: Oct 26 1997 → Oct 31 1997 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering
- Materials Science(all)