Influence of HPT or rolling on age-hardening in Al-Mg-Si alloys

Takeshi Nagai, Kenji Matsuda, Junya Nakamura, Tokimasa Kawabata, Susumu Ikeno, Daichi Akama, Zenji Horita, Syoichi Hirosawa

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

    Abstract

    Severe plastic deformation (SPD) techniques, such as equal channel angular pressing (ECAP), accumulative roll bonding (ARB) and high pressure torsion (HPT), have been extensively researched to achieve. SPD process makes use of the plastic deformation where no change in the cross-sectional dimension of a work piece occurs during straining. In this work, the effect of HPTed or rolled on aging behavior and microstructure in Al-Mg-Si alloys were investigated. The results show that processing by HPTed leads to significant grain refinement with a grain size of ∼400nm. Age-hardening phenomenon was confirmed at 343K and 373K but not at 423K for the HPTed Al-Mg-Si alloy. For the rolled alloys, there is little difference between the hardness of the alloys with different rolling rate. On the other hand, crystal grain with high dislocation density and grain boundary precipitates are observed with TEM analysis for HPTed samples aged at 473 K.

    Original languageEnglish
    Title of host publicationTHERMEC 2011 Supplement
    Pages603-606
    Number of pages4
    DOIs
    Publication statusPublished - 2012
    Event7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011 - Quebec City, QC, Canada
    Duration: Aug 1 2011Aug 5 2011

    Publication series

    NameAdvanced Materials Research
    Volume409
    ISSN (Print)1022-6680

    Other

    Other7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
    Country/TerritoryCanada
    CityQuebec City, QC
    Period8/1/118/5/11

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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