Mechanical Properties and Microstructures of Highly Fe-Containing Al–Mg–Si Alloys Processed by Severe Plastic Deformation under High Pressure

  • Tang Yongpeng
    Graduate School of Engineering, Kyushu Institute of Technology
  • Tomita Yuto
    Showa Denko K.K.
  • Horita Zenji
    Graduate School of Engineering, Kyushu Institute of Technology Magnesium Research Center, Kumamoto University Synchrotron Light Application Center, Saga University

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Abstract

<p>In this study, A6022-based Al–Mg–Si alloys with three additional Fe contents are processed by high-pressure torsion (HPT) and high-pressure sliding (HPS). Both processes yield a similar tensile strength exceeding 400 MPa. Fe intermetallics were finely and homogeneously fragmented to an average size of ∼2 µm by the HPT process. The high tensile strength is attributed to such a fine and homogeneous fragmentation of Fe intermetallics. It is also demonstrated that the finely fragmented Fe intermetallics play an important role to maintain finer grain size even after solution treatment.</p>

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 64 (2), 448-457, 2023-02-01

    The Japan Institute of Metals and Materials

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