A double inclusion homogenization scheme for polycrystals with hierarchal topologies: application to twinning in Mg alloys - Université de Lorraine Access content directly
Journal Articles International Journal of Plasticity Year : 2014

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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Dates and versions

hal-01503457 , version 1 (07-04-2017)

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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, 2014, 60, pp.182-196. ⟨10.1016/j.ijplas.2014.04.001⟩. ⟨hal-01503457⟩
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