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

    Research output: Contribution to journalArticlepeer-review

    121 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)63-72
    Number of pages10
    JournalMaterials Science and Engineering A
    Volume272
    Issue number1
    DOIs
    Publication statusPublished - Nov 15 1999

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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