Using intense plastic straining for high-strain-rate superplasticity

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

    Research output: Contribution to journalArticlepeer-review

    64 Citations (Scopus)

    Abstract

    Ultrafine grain sizes may be introduced into bulk samples by using the intense plastic straining technique equal-channel angular pressing. This article describes the principles of equal-channel angular pressing and demonstrates the application of this procedure to attain ultrafine grain sizes in an Al-3Mg solid-solution alloy and a commercial cast Al-Mg-Li-Zr alloy. Provided there is stability of these ultrafine grains at elevated temperatures, as in the Al-Mg-Li-Zr alloy, equal-channel angular pressing may be used as a processing tool to achieve high-strain-rate superplasticity in materials that are not potentially superplastic. These results have important implications for reducing the long production times that are associated with the fabrication of complex parts using superplastic forming.

    Original languageEnglish
    Pages (from-to)41-45
    Number of pages5
    JournalJOM
    Volume50
    Issue number6
    DOIs
    Publication statusPublished - Jun 1998

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Engineering(all)

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