Thermal stability of ultrafine-grained aluminum in the presence of Mg and Zr additions

Hideaki Hasegawa, Shogo Komura, Atsushi Utsunomiya, Zenji Horita, Minoru Furukawa, Minoru Nemoto, Terence G. Langdon

    研究成果: Contribution to journalArticle査読

    195 被引用数 (Scopus)

    抄録

    Superplastic deformation occurs at high temperatures and requires the presence of a very small grain size. Experiments demonstrate that equal-channel angular (ECA) pressing is capable of introducing ultrafine grain sizes in pure Al, Al-Mg and Al-Zr alloys, with grain sizes lying in the sub-micrometer range for the alloys. It is shown by static annealing that these ultrafine grain sizes are not stable in pure Al and the Al-Mg alloys at elevated temperatures but in the Al-Zr alloys the grains remain small up to temperatures of ≈600 K.

    本文言語英語
    ページ(範囲)188-196
    ページ数9
    ジャーナルMaterials Science and Engineering A
    265
    1-2
    DOI
    出版ステータス出版済み - 6 15 1999

    All Science Journal Classification (ASJC) codes

    • 材料科学(全般)
    • 凝縮系物理学
    • 材料力学
    • 機械工学

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