Application of high-pressure sliding for grain refinement of Al and Mg alloys

Kiyonari Tazoe, Shuji Honda, Zenji Horita

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    12 Citations (Scopus)

    Abstract

    An earlier study showed that high-pressure sliding (HPS) is effective for grain refinement of pure Al in a rectangular sheet form using the principle of high-pressure torsion. In this study, the HPS is applied for grain refinement of an Al-3%Mg-0.2%Sc alloy and an AZ61 Mg alloy. HPS was conducted under a pressure of 1 GPa with sliding distances of 10 to 30 mm at room temperature for the Al alloy and at 473 K for the Mg alloy The average grain size is ∼300 nm for both the Al and Mg alloys, respectively. Tensile tests showed that a superplastic elongation of ∼1500% is achieved in the Al-3%Mg-0.2%Sc alloy at 573 K with an initial strain rate of 3.3×10-3 s-1 and of ∼600% in the AZ61 alloy at 573 K with an initial strain rate of 1×10-3 s-1.

    Original languageEnglish
    Title of host publicationNanomaterials by Severe Plastic Deformation, NanoSPD5
    PublisherTrans Tech Publications Ltd
    Pages91-96
    Number of pages6
    ISBN (Print)9783037850077
    DOIs
    Publication statusPublished - 2011

    Publication series

    NameMaterials Science Forum
    Volume667-669
    ISSN (Print)0255-5476
    ISSN (Electronic)1662-9752

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering
    • General Materials Science

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