Significance of adiabatic heating in equal-channel angular pressing

Daisuke Yamaguchi, Zenji Horita, Minoru Nemoto, Terence G. Langdon

    研究成果: Contribution to journalArticle査読

    111 被引用数 (Scopus)

    抄録

    Equal-channel angular (ECA) pressing is a procedure in which a material is subjected to an increase plastic strain by pressing a sample through a special die. Adiabatic heating was measured during equal-channel angular pressing using samples of pure Al and three Al-based alloys. At a pressing speed of 18 mm s-1, there is an abrupt increase in the temperature on passing through the shearing plane and the magnitude of this temperature increase scales approximately with the ultimate tensile stress of the material. There is no significant adiabatic heating when using a pressing speed of 0.18 mm s-1 although the as-pressed microstructure at this speed is essentially identical to that attained at a pressing speed of 18 mm s-1.

    本文言語英語
    ページ(範囲)791-796
    ページ数6
    ジャーナルScripta Materialia
    41
    8
    DOI
    出版ステータス出版済み - 8 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
    • 金属および合金

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