Abstract
The paper reports simulation of cascades in Fe–9at.%Cr binary alloy containing chromium-rich clusters. The simulation is performed by the molecular dynamics method at the initial temperature of 300K and primary knock-on atom energy of 15 and 20keV. Spherical clusters containing 95at.% of Cr with diameter of 1–5nm have been considered. The properties of cascade evolution in the presence of chromium-rich cluster are studied. It is shown that these clusters tend to dissolve in collision cascades. However, clusters with diameter of ⩾3nm exhibit only slight modifications and can be considered stable. Parameters of small (1–2nm) clusters can change significantly and, in some cases, a 1nm cluster can be totally dissolved.
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