Microstructures and mechanical properties of Mg alloy after severe torsion straining process

Yuichi Miyahara, Naoki Emi, Koji Neishi, Katsuaki Nakamura, Kenji Kaneko, Michihiko Nakagaki, Zenji Horita

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

    13 被引用数 (Scopus)

    抄録

    Grain refinement is attempted using severe plastic deformation (SPD) through the severe torsion straining process (STSP) which we have developed recently. The STSP is a continuous process for grain refinement without requirement of any die. In this study, an AZ61 Mg alloy was subjected to STSP at a temperature of 573 K with a rotation speed of 10 rpm and a moving speed of 200 mm/min. With this process, an initial grain size of ∼20 μm was reduced to ∼2∼3 μm. Room temperature compression tests revealed that there were no cracks after 15% of compression for the STSP sample whereas fracture occurred for a conventionally extruded sample. For compression tests at 473 K, no cracks occurred in the STSP samples after 80% compression but compression was feasible without cracking only up to 20% for an extruded sample. It is shown that the STSP can be useful for grain refinement and ductility improvement of the AZ61 Mg alloy.

    本文言語英語
    ホスト出版物のタイトルNanomaterials by Severe Plastic Deformation, NanoSPD3 - Proceedings of the 3rd International Conference on Nanomaterials by Severe Plastics Deformation
    ページ949-954
    ページ数6
    出版ステータス出版済み - 12 1 2006
    イベント3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3 - Fukuoka, 日本
    継続期間: 9 22 20059 26 2005

    出版物シリーズ

    名前Materials Science Forum
    503-504
    ISSN(印刷版)0255-5476

    その他

    その他3rd International Conference on Nanomaterials by Severe Plastics Deformation, NanoSPD3
    Country日本
    CityFukuoka
    Period9/22/059/26/05

    All Science Journal Classification (ASJC) codes

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

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