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Title: Size-dependent crystal plasticity: from micro-pillar compression to bending
Authors: Liu, Qiang
Roy, Anish
Silberschmidt, Vadim V.
Keywords: Crystal plasticity
Micro pillar compression
Element analysis
Issue Date: 2016
Publisher: © Crown copyright. Published by Elsevier
Citation: LIU, Q., ROY, A. and SILBERSCHMIDT, V.V., 2016. Size-dependent crystal plasticity: from micro-pillar compression to bending. Mechanics of Materials, 100, pp. 31 - 40.
Abstract: Size-dependent crystal plasticity of metal single crystals is investigated using finite-element method based on a phenomenological crystal-plasticity model, incorporating both first-order and second-order effects. The first-order effect is independent of the nature of the loading state, and described by three phenomenological relationships based on experimental results. The second-order effect is considered in terms of storage of geometrically necessary dislocations, affected significantly by the loading state. The modelling approach is shown to capture the influence of loading conditions on the sample size effect observed in compression and bending experiments. A modelling study demonstrates the subtleness and importance of accounting for first-order and second-order effects in modelling crystalline materials in small length-scales.
Description: This paper was accepted for publication in the journal Mechanics of Materials and the definitive published version is available at http://dx.doi.org/10.1016/j.mechmat.2016.06.002
Sponsor: Funding from the Engineering and Physical Sciences Research Council (UK) through grant EP/K028316/1 and Department of Science and Technology (India), project MAST, is gratefully acknowledged.
Version: Accepted for publication
DOI: 10.1016/j.mechmat.2016.06.002
URI: https://dspace.lboro.ac.uk/2134/21833
Publisher Link: http://dx.doi.org/10.1016/j.mechmat.2016.06.002
ISSN: 0167-6636
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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