Abstract
It is shown that the dependence of self-interstitial cluster diffusivity in Fe–Cr
alloys on Cr concentration correlates with that of swelling in these alloys under
neutron irradiation; namely, with increasing chromium concentration the cluster
diffusivity first decreases and then increases. The origin of such behaviour lies
in a relatively long-ranged, 1 nm, attractive interaction between Cr atoms
and crowdions. The minimum diffusivity is realized for 11 at.% Cr, where all
crowdions constituting the cluster interact with Cr atoms, but the interaction
fields of different Cr atoms do not overlap.
Original language | English |
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Pages (from-to) | 587-594 |
Journal | Philosophical Magazine Letters |
Volume | 85 |
Issue number | 11 |
State | Published - 1 Nov 2005 |