Microstructure evolution in pure Al processed with twist extrusion

Dmitry Orlov, Yan Beygelzimer, Sergey Synkov, Viktor Varyukhin, Nobuhiro Tsuji, Zenji Horita

    研究成果: ジャーナルへの寄稿学術誌査読

    51 被引用数 (Scopus)

    抄録

    High purity Al (99.99%) was subjected to severe plastic deformation through twist extrusion at room temperature. Microstructures were examined for 1 pass and 4 passes on the cross section perpendicular to the longitudinal axis of billets using optical microscopy and electron back scatter diffraction analysis. It was shown that a vortex-like material flow was observed on the cross section and this became more intense with increasing number of the pressing. After one pass, subgrain structures with low angle grain boundaries were developed throughout the section but after 4 passes, the microstructure consisted of grains surrounded by high angle boundaries with fraction of ̃70% in the edge parts. The average grain size at the edge parts is refined tõ1.6μm.

    本文言語英語
    ページ(範囲)96-100
    ページ数5
    ジャーナルMaterials Transactions
    50
    1
    DOI
    出版ステータス出版済み - 1月 2009

    !!!All Science Journal Classification (ASJC) codes

    • 材料科学(全般)
    • 凝縮系物理学
    • 材料力学
    • 機械工学

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