Affordable Access

Publisher Website

Dynamical interaction of helium bubbles with cascade damage in Fe–9Cr ferritic alloy

Authors
Journal
Journal of Nuclear Materials
0022-3115
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/j.jnucmat.2008.12.087

Abstract

Abstract Dynamic interaction of helium bubble with cascade damage in Fe–9Cr ferritic alloy has been studied using in situ irradiation and electron microscopy. During the irradiation of the alloy by 400 keV Fe + ions at temperatures where no thermal motion takes place, induced displacement of small helium bubbles was observed: the bubbles underwent sporadic and instant displacement. The displacement was of the order of a few nanometers. The experimentally determined displacement probability of helium bubbles is consistent with the calculated probability of their dynamic interaction with sub-cascades introduced by the irradiation. Furthermore, during the irradiation of the alloy at higher temperatures, both retarded and accelerated Brownian type motions were observed. These results are discussed on the basis of dynamic interaction of helium bubbles with point defects that survive through high-energy self-ion irradiation.

There are no comments yet on this publication. Be the first to share your thoughts.