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Simulation of grain growth in nanocrystalline nickel induced by ion irradiation

Voegeli, W. and Albe, K. and Hahn, H. (2003):
Simulation of grain growth in nanocrystalline nickel induced by ion irradiation.
In: Nucl. Instr. Meth. B, Elsevier, pp. 230-235, 202, [Online-Edition: http://www.sciencedirect.com/science/article/pii/S0168583X02...],
[Article]

Abstract

Molecular dynamics simulations of 5 keV cascades in nanocrystalline nickel with grain sizes of 5 and 10 nm are presented. If the spike volume is exceeding the grain size or overlapping the grain boundary (GB) area we observe ionbeam induced grain growth for both grain sizes. In contrast cascades located in the grain volume lead to the formation of vacancies and interstitials, where the latter are mostly accommodated by the GBs upon annealing. Finally, we show that ion-beam induced grain growth is a direct result of recrystallisation of the thermal spike and therefore inherently different to grain growth observed in long time thermal annealing simulations. (C) 2002 Elsevier Science B.V. All rights reserved.

Item Type: Article
Erschienen: 2003
Creators: Voegeli, W. and Albe, K. and Hahn, H.
Title: Simulation of grain growth in nanocrystalline nickel induced by ion irradiation
Language: English
Abstract:

Molecular dynamics simulations of 5 keV cascades in nanocrystalline nickel with grain sizes of 5 and 10 nm are presented. If the spike volume is exceeding the grain size or overlapping the grain boundary (GB) area we observe ionbeam induced grain growth for both grain sizes. In contrast cascades located in the grain volume lead to the formation of vacancies and interstitials, where the latter are mostly accommodated by the GBs upon annealing. Finally, we show that ion-beam induced grain growth is a direct result of recrystallisation of the thermal spike and therefore inherently different to grain growth observed in long time thermal annealing simulations. (C) 2002 Elsevier Science B.V. All rights reserved.

Journal or Publication Title: Nucl. Instr. Meth. B
Volume: 202
Publisher: Elsevier
Uncontrolled Keywords: Radiation damage; Nanocrystalline materials; Molecular dynamics
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials
Date Deposited: 22 Feb 2012 16:22
Official URL: http://www.sciencedirect.com/science/article/pii/S0168583X02...
Additional Information:

6th International Conference on Computer Simulation of Radiation Effects in Solids

Identification Number: doi:10.1016/S0168-583X(02)01862-1
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