A double inclusion homogenization scheme for polycrystals with hierarchal topologies: Application to twinning in Mg alloys
Data(s) |
01/01/2014
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Resumo |
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-Mori 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. © 2014 Published by Elsevier Ltd. |
Identificador | |
Idioma(s) |
eng |
Publicador |
Elsevier |
Relação |
http://dro.deakin.edu.au/eserv/DU:30070403/barnett-adoubleinclusion-2014.pdf http://www.dx.doi.org/10.1016/j.ijplas.2014.04.001 |
Direitos |
2014, Elsevier |
Palavras-Chave | #Magnesium #Micromechanics #Twinning #Science & Technology #Technology #Engineering, Mechanical #Materials Science, Multidisciplinary #Mechanics #Engineering #Materials Science #VISCOPLASTIC HETEROGENEOUS MATERIALS #FINITE-ELEMENT MODEL #SELF-CONSISTENT #NONLINEAR COMPOSITES #NEUTRON-DIFFRACTION #TEXTURE DEVELOPMENT #DEFORMATION #PLASTICITY #BEHAVIOR #METALS |
Tipo |
Journal Article |