Superplastlcity of a Cu-Zn-Sn alloy processed by equal-channel angular pressing

Koji Neishi, Toru Uchida, Nobuyuki Ashie, Atsushi Yamauchi, Katsuaki Nakamura, Zenji Horita, Terence G. Langdon

    Research output: Contribution to journalConference articlepeer-review

    1 Citation (Scopus)


    Equal-channel angular pressing (ECAP) was conducted using dies having two different channel angles, Φ=90° and 135°, for grain refinement of a Cu-38%Zn-3%Sn alloy. Orientation image microscopy (OIM) was used for microstructural observations and phase identification including the analysis of misorientation angles. Tensile testing and upset testing were carried out at elevated temperatures to examine the superplastic ductility and the formability of the alloy. The grain refinement was achieved effectively by conducting the ECAP at a temperature where a phase transformation occurs. The use of a die having Φ=90° led to a finer grain size with a larger fraction of high angle grain boundaries than using a die having Φ=135°.

    Original languageEnglish
    Pages (from-to)483-488
    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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