Shear impossibility: Comments on “Void growth by dislocation emission” and “Void growth in metals: Atomistic calculations”

Received 8 August 2009; accepted 1 March 2010. published online 08 March 2010.

Recently it was proposed that voids in crystals could grow by emission of shear dislocation loops [V.A. Lubarda, M.S. Scheider, D.H. Kalantar, B.A. Remington, M.A. Meyers, Acta Materialia 52 (2004) 1397–1408]. Even more recently, this proposal was ostensibly supported by molecular simulations of voids in strained single crystals [S. Traiviratana, E.M. Bringa, D.J. Benson, M.A. Meyers, Acta Materialia 56 (2008) 3874–3886]. The purpose of this comment is to dispute this recent assertion as unfounded.

Keywords: Void growth, Dislocation nucleation, Dislocations, Molecular dynamics

a Lawrence Livermore National Laboratory, Livermore, CA 94550, USA

b Ktech Corporation, Albuquerque, NM 87185, USA

Corresponding author. Tel.: +1 925 423 0124; fax: +1 925 423 0785.

PII: S1359-6462(10)00130-2

doi:10.1016/j.scriptamat.2010.03.001

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