SIMULATIONS OF COLLISION CASCADES IN Cu – Nb LAYERED COMPOSITES USING AN EAM INTERATOMIC POTENTIAL
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The embedded atom method (EAM) is used to construct an interatomic potential for modelling interfaces in Cu-Nb nanocomposites. Implementation of the Ziegler-Biersack-Littmark (ZBL) model for short-range interatomic interactions enables studies of response to ion bombardment. Collision cascades are modelled in fcc Cu, bcc Nb, and in Cu-Nb layered composites in the experimentally-observed Kurdjumov-Sachs (KS) orientation relation. The interfaces in these composites reduce the number of vacancies and interstitials created per keV of the primary knock-on atom (PKA) by 50-70% compared to fcc Cu or bcc Nb. © 2009 Imperial College Press.
author list (cited authors)
DEMKOWICZ, M. J., & HOAGLAND, R. G.