The potential for scaling ECAP: Effect of sample size on grain refinement and mechanical properties

Zenji Horita, Takayoshi Fujinami, Terence G. Langdon

    Research output: Contribution to journalArticlepeer-review

    250 Citations (Scopus)

    Abstract

    The potential for scaling equal-channel angular pressing (ECAP) for use with large samples was investigated by conducting tests on an aluminum alloy using cylinders having diameters from 6-40 mm. The results show the refinement of the microstructure and the subsequent mechanical properties after pressing are independent of the initial size of the sample and, for the largest sample with a diameter of 40 mm, independent of the location within the sample at least to a distance of ∼5 mm from the sample edge. By making direct measurements of the imposed load during ECAP, it is shown that the applied load is determined by the sample strength rather than frictional effects between the sample and the die walls. The results demonstrate the feasibility of scaling ECAP to large sizes for use in industrial applications.

    Original languageEnglish
    Pages (from-to)34-41
    Number of pages8
    JournalMaterials Science and Engineering A
    Volume318
    Issue number1-2
    DOIs
    Publication statusPublished - Nov 2001

    All Science Journal Classification (ASJC) codes

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

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