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    Influence of strain gradients on lattice rotation in nano-indentation experiments: A numerical study

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    Type
    Article
    Authors
    Demiral, Murat
    Roy, Anish
    El Sayed, Tamer S.
    Silberschmidt, Vadim V.
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Physical Science and Engineering (PSE) Division
    Date
    2014-07
    Permanent link to this record
    http://hdl.handle.net/10754/563008
    
    Metadata
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    Abstract
    In this paper the texture evolution in nano-indentation experiments was investigated numerically. To achieve this, a three-dimensional implicit finite-element model incorporating a strain-gradient crystal-plasticity theory was developed to represent accurately the deformation of a body-centred cubic metallic material. A hardening model was implemented to account for strain hardening of the involved slip systems. The surface topography around indents in different crystallographic orientations was compared to corresponding lattice rotations. The influence of strain gradients on the prediction of lattice rotations in nano-indentation was critically assessed. © 2014 Elsevier B.V..
    Citation
    Demiral, M., Roy, A., El Sayed, T., & Silberschmidt, V. V. (2014). Influence of strain gradients on lattice rotation in nano-indentation experiments: A numerical study. Materials Science and Engineering: A, 608, 73–81. doi:10.1016/j.msea.2014.04.033
    Sponsors
    The research leading to these results received funding from the European Union Seventh Framework Programme(FP7/2007-2013) under Grant agreement PITN-GA-2008-211536, project MaMiNa and KAUST baseline fund. MD thanks Prof. Fionn Dunne for useful discussions.
    Publisher
    Elsevier BV
    Journal
    Materials Science and Engineering: A
    DOI
    10.1016/j.msea.2014.04.033
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.msea.2014.04.033
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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