Microstructural control of an Al-Mg-Si alloy using equal-channel angular pressing

Keiichiro Oh-Ishi, Yukihiro Hashi, Akiko Sadakata, Kenji Kaneko, Zenji Horita, Terence G. Langdon

    Research output: Contribution to journalConference articlepeer-review

    51 Citations (Scopus)


    Severe plastic deformation using the process of equal-channel angular pressing (ECAP) was applied to an age-hardenable Al-Mg-Si alloy containing precipitate particles. Subsequent microstructual changes were examined using conventional transmission electron microscopy and energy-filtered transmission electron microscopy. It is shown that metastable rod-shaped β' particles are fragmented into round-shaped particles by the severe straining and there is a dissolution of the particles with an increase in the imposed strain. Further aging leads to the formation of cube-shaped particles in sample where the dissolution of particles occurs. It is also shown that the aging is significantly accelerated, and Si particles are formed, if it is undertaken using samples subjected to ECAP.

    Original languageEnglish
    Pages (from-to)333-338
    Number of pages6
    JournalMaterials Science Forum
    Issue number1
    Publication statusPublished - Jan 1 2002
    EventAluminium Alloys 2002 Their Physical and Mechnaical Properties: Proceedings of the 8th International Conference ICAA8 - Cambridge, United Kingdom
    Duration: Jul 2 2002Jul 5 2002

    All Science Journal Classification (ASJC) codes

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


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