Developing superplastic properties in an aluminum alloy through severe plastic deformation

Sungwon Lee, Patrick B. Berbon, Minoru Furukawa, Zenji Horita, Minoru Nemoto, Nikolai K. Tsenev, Ruslan Z. Valiev, Terence G. Langdon

    研究成果: ジャーナルへの寄稿学術誌査読

    121 被引用数 (Scopus)

    抄録

    Equal-channel angular (ECA) pressing is a processing procedure which subjects a material to severe plastic deformation. Tests were conducted on a commercial cast aluminum alloy to evaluate the properties associated with samples subjected to three different ECA pressing procedures. The results show that all three procedures lead to an ultrafine microstructure and each procedure is capable of producing samples which exhibit high strain rate superplasticity. Optimum superplastic properties were achieved in samples subjected to ECA pressing to a strain of ~12. Under these conditions, the measured elongations to failure at a temperature of 673 K were 1210 and 950% at strain rates of 10-1 and 1 s-1, respectively.

    本文言語英語
    ページ(範囲)63-72
    ページ数10
    ジャーナルMaterials Science and Engineering A
    272
    1
    DOI
    出版ステータス出版済み - 11月 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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