Achieving superplasticity of ultrafine-grained rod-like AZ61 alloy using high-pressure sliding

Takahiro Masuda, Kazushige Fujimitsu, Yoichi Takizawa, Zenji Horita

    研究成果: Contribution to journalArticle査読

    4 被引用数 (Scopus)

    抄録

    Recent study demonstrated that processing through High-Pressure Sliding (HPS) is effective for grain refinement of a rodlike A2024 aluminum alloy. In this study, the HPS processing was applied to an AZ61 magnesium alloy. To achieve homogeneous grain refinement throughout the cross section of the rods, the samples were rotated around the longitudinal axis of the rod every after HPS processing. Microstructural observations revealed that the grain size was refined to 450 nm. Tensile tests showed that the samples exhibited excellent superplasticity with a maximum elongation of 1140% at a testing temperature of 473 K and at an initial strain rate of 1.0 × 10-3 s-1, giving a strain rate sensitivity of 0.4.

    本文言語英語
    ページ(範囲)128-133
    ページ数6
    ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
    80
    2
    DOI
    出版ステータス出版済み - 1 1 2016

    All Science Journal Classification (ASJC) codes

    • 凝縮系物理学
    • 材料力学
    • 金属および合金
    • 材料化学

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