Influence of channel geometry on superplasticity in equal-channel angular pressing

Masakazu Kamachi, Takayoshi Fujinami, Zenji Horita, Terence G. Langdon

    Research output: Contribution to journalConference articlepeer-review

    7 Citations (Scopus)


    Equal-channel angular pressing (ECAP) was conducted on an Al-l%Mg-0.2%Sc alloy using a die having a channel angle (Φ) of 90° but with two different angles, 0° and 90°, for the outer arc of curvature (Ψ). Microstructures were observed by optical microscopy and transmission electron microscopy to examine the effect of Ψ. Tensile tests were also conducted and the ductility was examined for the ECAP samples processed with the two different angles, Ψ=0° and Ψ=90°. It is shown that the microstructure was more homogeneous for Ψ=0° than Ψ=90°. However, larger ductility was obtained for the samples processed with Ψ=90° than Ψ=90°.

    Original languageEnglish
    Pages (from-to)477-482
    Number of pages6
    JournalMaterials Science Forum
    Publication statusPublished - 2004
    EventSuperplasticity in Advanced Materials: 8th International Conference on Superplasticity in Advanced Materials, ICSAM 2003 - Oxford, United Kingdom
    Duration: Jul 28 2003Jul 30 2003

    All Science Journal Classification (ASJC) codes

    • General Materials Science
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering


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