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research article
Stacking fault tetrahedra formation in the neighbourhood of grain boundaries
Large scale molecular dynamics computer simulations are performed to study the role of the grain boundary (GB) during the cascade evolution in irradiated nanocrystalline Ni. At all primary knock-on atom (PKA) energies in cascades near GBs, the damage produced after cooling down is vacancy dominated. Truncated stacking fault tetrahedra (TSFTs) are easily formed at 10 keV and higher PKA energies. At the higher energies a complex partial dislocation network forms, consisting of TSFTs. The GB acts as an interstitial sink without undergoing major structural changes. (C) 2002 Elsevier Science B.V. All rights reserved.
Type
research article
Web of Science ID
WOS:000182122500009
Authors
Publication date
2003
Volume
202
Start page
51
End page
55
Peer reviewed
REVIEWED
Available on Infoscience
April 16, 2008
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