Microstructural characteristics of ultrafine-grained aluminum produced using equal-channel angular pressing

Yoshinori Iwahashi, Minoru Furukawa, Zenji Horita, Minoru Nemoto, Terence G. Langdon

    Research output: Contribution to journalArticlepeer-review

    294 Citations (Scopus)

    Abstract

    The shearing associated with equal-channel angular (EGA) pressing was examined using optical microscopy. Samples of pure Al with a large grain size were subjected to ECA pressing to different strains and then examined on three orthogonal planes. Samples were pressed without any rotation or with rotations of either 90 or 180 deg between each consecutive pressing. The experimental observations are compared with models which predict the shearing characteristics associated with ECA pressing under different conditions. It is demonstrated that there is good agreement, in terms of both the grain elongation and the shearing within individual grains, between the experimental results and the predictions of the models.

    Original languageEnglish
    Pages (from-to)2245-2252
    Number of pages8
    JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
    Volume29
    Issue number9
    DOIs
    Publication statusPublished - 1998

    All Science Journal Classification (ASJC) codes

    • Condensed Matter Physics
    • Mechanics of Materials
    • Metals and Alloys

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