Basal slip in Laves phases: The synchroshear dislocation
J Guenole and FZ Mouhib and L Huber and B Grabowski and S Korte-Kerzel, SCRIPTA MATERIALIA, 166, 134-138 (2019).
Two different mechanisms have been reported in previous ab initio studies to describe basal slip in complex intermetallic Laves phases: synchroshear and undulating slip. To date, no clear answer has been given on which is the energetically favourable mechanism and whether either of them could effectively propagate as a dislocation. Using classical atomistic simulations supported by at , initio calculations, the present work removes the ambiguity and shows that the two mechanisms are, in fact, identical. Furthermore, we establish synchroshear as the mechanism for propagating dislocations within the basal plane in Laves phases. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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