Improvement of mechanical properties for Al alloys using equal-channel angular pressing

Z. Horita, T. Fujinami, M. Nemoto, T. G. Langdon

    研究成果: Contribution to journalArticle査読

    253 被引用数 (Scopus)

    抄録

    Equal-channel angular pressing (ECAP) was attempted at room temperature to refine grain sizes of six different commercial Al alloys, 1100, 2024, 3004, 5083, 6061 and 7075. Transmission electron microscopy revealed that submicrometer grain sizes are attained in these alloys. Tensile tests at room temperature showed that the strength increases with an increase in the number of pressings but the elongation to failure remains little changed following a large decrease after the first pressing. Static annealing experiments demonstrated that the extensive grain growth occurs above ∼200°C in 1100, 3004, 5083 and 6061 but the submicrometer-grained structures are stable in 2024 and 7075 even at 300°C. It was confirmed that the Hall-Petch relationship holds for the ECA-pressed alloys. The effect of sample size was further examined and the applied load was measured during ECAP for the possibility of scaling-up the process.

    本文言語英語
    ページ(範囲)288-292
    ページ数5
    ジャーナルJournal of Materials Processing Technology
    117
    3
    DOI
    出版ステータス出版済み - 11 23 2001

    All Science Journal Classification (ASJC) codes

    • セラミックおよび複合材料
    • コンピュータ サイエンスの応用
    • 金属および合金
    • 産業および生産工学

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