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

Takahiro Masuda, Kazushige Fujimitsu, Yoichi Takizawa, Zenji Horita

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)128-133
    Number of pages6
    JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
    Volume80
    Issue number2
    DOIs
    Publication statusPublished - Jan 1 2016

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Mechanics of Materials
    • Metals and Alloys
    • Materials Chemistry

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