Construction of Finite Element Meshes for Polycrystal Grains Model from X-ray CT Image

Masakazu Kobayashi; Tomohiko Matsuyama; Aya Kouno; Hiroyuki Toda; Hiromi Miura

doi:10.2320/matertrans.M2016260

Masakazu Kobayashi, Tomohiko Matsuyama, Aya Kouno, Hiroyuki Toda, Hiromi Miura

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Keywords: grain microstructure, image based modeling, tomography, inhomogeneous deformation

JOURNAL FREE ACCESS FULL-TEXT HTML

2016 Volume 57 Issue 12 Pages 2089-2096

DOI https://doi.org/10.2320/matertrans.M2016260

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Abstract

A method to build an image-based model from a high-resolution X-ray CT image has been proposed for crystal plasticity finite element (CPFE) analysis in this study. The grain microstructures of aluminum alloy were captured by X-ray CT in synchrotron radiation facility, SPring-8. An image-based model of crystallographic grains was reproduced by the proposed method, and the model was analyzed by CPFE. By this, it was represented that deformation analysis of a polycrystal microstructure considering actual grain shapes was available suggesting that the deformation mechanism would be made clear by the image-based CPFE with further work.

Fig. 11 Grain aggregated model; (a) Original 3D voxel image, (b) GB surface mesh, (c) Meshed grains and (d) Meshed gains with outer edge for CPFE simulation. Fullsize Image

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