A 2D dislocation dynamic approach to simulating dimensional change in irradiated graphite using anisotropic strain theory

Young, P, Sheehan, G, Boone, J and Heggie, MI (2013) A 2D dislocation dynamic approach to simulating dimensional change in irradiated graphite using anisotropic strain theory Physica Status Solidi (C) Current Topics in Solid State Physics, 10 (1). pp. 133-136.

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Abstract

A program using two-dimensional dislocation dynamics with anisotropic strain equations has been written to simulate the dimensional change and stored elastic energy of irradiated graphite. A dislocation based model is put forward as a vehicle for both the longstanding atomic displacement model for dimensional change in irradiated graphite and a new model based on basal slip. As expected the introduction of prismatic dislocation loops (climb dipoles in 2D) results in the expansion of the graphite crystal in the c-axis direction. Interestingly the stored elastic energy of the system was found to increase with number of dislocation dipoles and reached a maximum at the density which Burakovsky et al. (Phys. Rev. B 61, 15011-15018 (2000) [1]) predicted for melting. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Item Type:	Article
Authors :	Name Email ORCID Young, P Sheehan, G Boone, J Heggie, MI m.heggie@surrey.ac.uk
Date :	1 January 2013
DOI :	10.1002/pssc.201200540
Depositing User :	Symplectic Elements
Date Deposited :	17 May 2017 12:42
Last Modified :	17 May 2017 12:42
URI:	http://epubs.surrey.ac.uk/id/eprint/836397

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