Assessment of deformation behavior of polycrystalline aluminum using diffraction-amalgamated grain-boundary tracking (DAGT) technique

Hiroyuki Toda, Takanobu Kamiko, Kentaro Uesugi, Akihisa Takeuchi, Yoshio Suzuki, Masakazu Kobayashi

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抜粋

A novel experimental method has been developed by amalgamating a pencil beam X-Ray diffraction (XRD) technique with the recently developed grain boundary tracking (GBT) technique. XRD and GBT are both non-destructive in-situ analysis techniques for characterizing bulk materials, which can be carried close to the point of fracture. DAGT provides information about individual grain orientations and 1-micron-level grain morphologies in 3-dimensions (3D) together with high-density local strain mapping. An Al-3 mass % Cu model alloy was used to investigate its deformation behavior under tension. The morphology of the grains was determined by the X-ray microtomography (XMT) imaging and the liquid metal wetting technique, after which GBT provided an accurate description of the position and morphology of all the grains in a region of interests. Diffraction spots in the XRD experiments were related to grains, making it possible to describe crystallographic orientation of all the grains. It has been revealed that deformation is localized at both microscopic and meso-scopic levels. Inhomogeneous deformation was observed in each individual grain. In addition, a group of a few grains coordinately interacts and specific grain boundaries thereby exhibit intense strain localization. Hydrostatic tension was also observed at quadruple junction points and its mechanism was analyzed.

元の言語英語
ホスト出版物のタイトルAluminium Alloys, ICAA 2014
編集者Knut Marthinsen, Bjørn Holmedal, Yanjun Li
出版者Trans Tech Publications Ltd
ページ57-62
ページ数6
ISBN(印刷物)9783038351207
DOI
出版物ステータス出版済み - 1 1 2014
イベント14th International Conference on Aluminium Alloys, ICAA 2014 - Trondheim, ノルウェー
継続期間: 6 15 20146 19 2014

出版物シリーズ

名前Materials Science Forum
794-796
ISSN(印刷物)0255-5476
ISSN(電子版)1662-9752

その他

その他14th International Conference on Aluminium Alloys, ICAA 2014
ノルウェー
Trondheim
期間6/15/146/19/14

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • これを引用

    Toda, H., Kamiko, T., Uesugi, K., Takeuchi, A., Suzuki, Y., & Kobayashi, M. (2014). Assessment of deformation behavior of polycrystalline aluminum using diffraction-amalgamated grain-boundary tracking (DAGT) technique. : K. Marthinsen, B. Holmedal, & Y. Li (版), Aluminium Alloys, ICAA 2014 (pp. 57-62). (Materials Science Forum; 巻数 794-796). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.794-796.57