| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9793582 | Journal of Nuclear Materials | 2005 | 12 Pages |
Abstract
A new mechanism of the lenticular grain face bubble migration which controls the bubble mobility and determines the drag force exerted on the grain boundary, is developed. It is shown that besides a more complicated (so called 'lenticular') shape of grain face bubbles, the migration mechanism of these bubbles might be essentially different from the intragranular bubbles, owing to their specific location on and interaction with a grain boundary. The model is validated against tests on grain growth kinetics during steady irradiation exposure and during post-irradiation annealing of UO2 fuel samples, and allows explanation of a strong retarding effect of irradiation on the grain growth observed in these tests.
Related Topics
Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
M.S. Veshchunov,