Fabrication and Characterization of Supersaturated Al-Mg Alloys by Severe Plastic Deformation and Their Mechanical Properties

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  • Kaneko Kenji
    Department of Materials Science and Engineering, Graduate School of Engineering, Kyushu University JST, CREST
  • Hata Tetsuro
    Department of Materials Science and Engineering, Graduate School of Engineering, Kyushu University
  • Tokunaga Tomoharu
    Department of Materials Science and Engineering, Graduate School of Engineering, Kyushu University
  • Horita Zenji
    Department of Materials Science and Engineering, Graduate School of Engineering, Kyushu University

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Description

Excess amount of Mg was intentionally added to fabricate supersaturated ultra-fine grained Al-Mg alloy by high pressure torsion (HPT). Their microstructures and mechanical properties were examined by X-ray diffraction (XRD) analysis, transmission electron microscopy (TEM) and Vickers microhardness test. It was confirmed that the minimum grain size reached ∼40 nm and maximum microhardness 292 Hv at the Mg content with 30 mass%. Further increase of the amount of Mg resulted the formation of β-Al3Mg2 and decrease of microhardness.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 50 (1), 76-81, 2009

    The Japan Institute of Metals and Materials

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