Morphological stability of Cu-Nb nanocomposites under high-energy collision cascades
Author(s)Zhang, Liang; Demkowicz, Michael J.
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We use molecular dynamics and phase field simulations to demonstrate that Cu-Nb multilayered nanocomposites with individual layer thicknesses above 2–4 nm remain morphologically stable when subjected to 100 keV collision cascades, characteristic of neutron or heavy ion irradiation. The probability of morphological instability rapidly increases as the layer thickness decreases to 1 nm, which we attribute to overlap of zones of liquid-like interdiffusion inside radiation-induced thermal spikes at neighboring interfaces in the multilayer.
DepartmentMassachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Applied Physics Letters
American Institute of Physics (AIP)
Zhang, Liang, and Michael J. Demkowicz. “Morphological Stability of Cu-Nb Nanocomposites Under High-Energy Collision Cascades.” Appl. Phys. Lett. 103, no. 6 (2013): 061604. © 2013 AIP Publishing LLC
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