Microstructures and mechanical properties of pure copper deformed severely by equal-channel angular pressing and high pressure torsion

N. Lugo, N. Llorca, J. M. Cabrera, Z. Horita

    Research output: Contribution to journalArticlepeer-review

    156 Citations (Scopus)

    Abstract

    Pure Cu of 99.98 wt.% purity has been processed at room temperature by diverse techniques of severe plastic deformation, namely equal-channel angular pressing (ECAP), high pressure torsion (HPT) and a combination of both in order to find out the evolution on the microstructural homogeneity for each of the processes and their combination. Starting with a grain size of ∼60 μm, severe plastic deformation has been introduced to the material while maintaining the sample dimensions unchanged through the processes of ECAP and HPT. A significant decrease in grain size was observed by transmission electronic microscopy (TEM). Microtensile and microhardness tests were carried out on the deformed material in the three processing conditions. A significant improvement of the tensile strength was promoted with admissible penalization on ductility.

    Original languageEnglish
    Pages (from-to)366-371
    Number of pages6
    JournalMaterials Science and Engineering A
    Volume477
    Issue number1-2
    DOIs
    Publication statusPublished - Mar 25 2008

    All Science Journal Classification (ASJC) codes

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

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