A double inclusion homogenization scheme for polycrystals with hierarchal topologies: application to twinning in Mg alloys

Abstract : The present work introduces a double inclusion elasto-plastic self-consistent (DI-EPSC) scheme for topologies in which crystals can contain subdomains (i.e. twins, etc.). The approach yields a direct coupling between the mechanical response of grains and their subdomains via a concentration relationship on mean fields derived from both the Eshelby and the Tanaka-Mod properties. The latent effect caused by twinning on the mechanical response is observed on both initially extruded and non-textured Mg alloys. For twinned grains, it is shown that deformation system activities and plastic strain distributions within twins drastically depend on the interaction with parent domains. Moreover, a quantitative study on the coupled influence of secondary slip activities on the material response is proposed.
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Article dans une revue
International Journal of Plasticity, Elsevier, 2014, 60, pp.182-196. 〈10.1016/j.ijplas.2014.04.001〉
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https://hal.univ-lorraine.fr/hal-01503457
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Soumis le : vendredi 7 avril 2017 - 10:24:34
Dernière modification le : jeudi 6 décembre 2018 - 15:08:03

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P. -A. Juan, Stéphane Berbenni, M. R. Barnett, C. N. Tome, L. Capolungo. A double inclusion homogenization scheme for polycrystals with hierarchal topologies: application to twinning in Mg alloys. International Journal of Plasticity, Elsevier, 2014, 60, pp.182-196. 〈10.1016/j.ijplas.2014.04.001〉. 〈hal-01503457〉

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