Influence of stacking fault energy on nanostructure formation under high pressure torsion

Y. H. Zhao, X. Z. Liao, Y. T. Zhu, Z. Horita, T. G. Langdon

    Research output: Contribution to journalArticlepeer-review

    141 Citations (Scopus)

    Abstract

    Copper, bronze (Cu-10 wt.% Zn) and brass (Cu-30 wt.% Zn) were deformed by high pressure torsion (HPT) under a pressure of 6 GPa for five rotations. The stacking fault energies (SFEs) of copper, bronze and brass are 78, 35 and 14 mJ/m2, respectively, and their average grain sizes after the HPT processing were about 84, 54 and 17 nm, respectively. Deformation twins were found in all samples and their densities increased with decreasing SFE. This work demonstrates that under the same conditions of HPT a low SFE promotes the formation of nanostructures and deformation twins.

    Original languageEnglish
    Pages (from-to)188-193
    Number of pages6
    JournalMaterials Science and Engineering A
    Volume410-411
    DOIs
    Publication statusPublished - Nov 25 2005

    All Science Journal Classification (ASJC) codes

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

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