TEM observation of HPT-processed cu-added excess Mg-type Al-Mg-Si alloys

Shun Maruno, Katsumi Watanabe, Kenji Matsuda, Seiji Saikawa, Shoichi Hirosawa, Zen Ji Horita, Seungwon Lee, Daisuke Terada

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


    Severe plastic deformation (SPD) techniques, such as equal channel angular pressing (ECAP), accumulative roll bonding (ARB) and high pressure torsion (HPT) have been extensively investigated to achieve. SPD techniques make use of plastic deformation process where no change in the cross-sectional dimension of a work piece occurs during straining. In this work, the effect of HPT on the aging behavior and microstructure in excess Mg-type Al-Mg-Si alloys including Cu are investigated. These alloys were investigated by hardness test and transmission electron microscopy (TEM) observation. The results show that processing by HPT leads to significant grain refinement with a grain size of 200-250nm.An age-hardening phenomenon is observed at 343K and 373K for the Al-Mg-Si alloys with HPT. Some precipitates were observed on grain boundaries.

    Original languageEnglish
    Title of host publicationAluminium Alloys, ICAA 2014
    EditorsKnut Marthinsen, Bjørn Holmedal, Yanjun Li
    PublisherTrans Tech Publications Ltd
    Number of pages4
    ISBN (Print)9783038351207, 9783038351207
    Publication statusPublished - 2014
    Event14th International Conference on Aluminium Alloys, ICAA 2014 - Trondheim, Norway
    Duration: Jun 15 2014Jun 19 2014

    Publication series

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


    Other14th International Conference on Aluminium Alloys, ICAA 2014

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering


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