Equal-channel angular pressing as a production tool for superplastic materials

Zenji Horita, S. Lee, S. Ota, K. Neishi, T. G. Langdon

    Research output: Contribution to journalConference articlepeer-review

    12 Citations (Scopus)

    Abstract

    Equal-channel angular pressing (ECAP) was applied for grain refinement of Al-3%Mg-0.2%Fe and Al-3%Mg-0.2%Ti alloys and also for a commercial Al 2024 alloy. The grain sizes of the alloys were reduced to ∼0.3 μm. The stability of the fine-grained structures were examined and it was found that the small grains remained stable up to the temperatures of ∼250°C for the Al-3%Mg-0.2%Fe and Al-3%Mg-0.2%Ti alloys and ∼400°C for the Al 2024 alloy. Tensile tests revealed maximum elongations of ∼370% and ∼180% in the Al-3%Mg-0.2%Fe and Al-3%Mg-0.2%Ti alloys, respectively, at a temperature of 250°C with an initial strain rate of 3.3×10-4 s-1. There is some evidence for low temperature superplasticity in the Al-3%Mg-0.2%Fe alloy. A maximum elongation of ∼460% was attained in the Al 2024 alloy at 400°C with an initial strain rate of 10-3 s-1. It is demonstrated that the ECAP can be effective in producing superplastic materials.

    Original languageEnglish
    Pages (from-to)471-476
    Number of pages6
    JournalMaterials Science Forum
    Volume357-359
    DOIs
    Publication statusPublished - 2001
    EventSuperplasticity in Advanced Materials (ICSAM-2000) - Orlando, FL, United States
    Duration: Aug 1 2000Aug 4 2000

    All Science Journal Classification (ASJC) codes

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

    Fingerprint

    Dive into the research topics of 'Equal-channel angular pressing as a production tool for superplastic materials'. Together they form a unique fingerprint.

    Cite this