Developing high strain rate superplasticity in aluminum alloys

Cheng Xu, Minoru Furukawa, Zenji Horita, Terence G. Langdon

    Research output: Contribution to journalConference articlepeer-review

    2 Citations (Scopus)

    Abstract

    The conventional materials used in superplastic forming operations generally have grain sizes of ∼2 μm or larger and they exhibit superplasticity at relatively low strain rates. Processing by equal-channel angular pressing (ECAP) produces materials having ultrafine-grain sizes, usually in the submicrometer range. If these ultrafine grains show reasonable stability at elevated temperatures, the alloys may exhibit a capability for achieving superplastic elongations at high strain rates. This paper examines the development of ultrafme-grained structures and superplastic ductilities in a spray-cast aluminum 7034 alloys through ECAP. The results show that ECAP is a very effective procedure for achieving grain refinement and superplasticity at rapid strain rates.

    Original languageEnglish
    Pages (from-to)2949-2954
    Number of pages6
    JournalMaterials Science Forum
    Volume475-479
    Issue numberIV
    DOIs
    Publication statusPublished - Jan 1 2005
    EventPRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China
    Duration: Nov 2 2004Nov 5 2004

    All Science Journal Classification (ASJC) codes

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

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