High-pressure torsion for ring samples in different thicknesses

Hideaki Iwaoka, Yosuke Harai, Zenji Horita

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    High-pressure torsion (HPT) was conducted with ring samples of pure Al (99.99%) having different thicknesses. They were cut from an Al plate with 10 mm thickness to dimensions having inner and outer diameters of 23 and 30 mm with thicknesses of 2 mm or 4 mm. HPT was conducted at room temperature under a pressure of 1 GPa at a rotation speed of 1 rpm. It is shown that the strain was introduced more intensely in the mid part on the cross section. This strained region extended with increasing number of revolution and covered throughout the cross section in the 2 mm thickness ring after 30 revolutions. The intense-strained region extended to ∼3 mm in the 4 mm thickness ring after 30 revolutions but remains almost the same even after 100 revolutions. The thickness of ∼3 mm may be an upper limit to achieve homogeneous introduction of the strained region throughout the cross section.

    Original languageEnglish
    Title of host publicationNanomaterials by Severe Plastic Deformation, NanoSPD5
    Pages51-56
    Number of pages6
    DOIs
    Publication statusPublished - Feb 25 2011
    Event5th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD5 - Nanjing, China
    Duration: Mar 21 2011Mar 25 2011

    Publication series

    NameMaterials Science Forum
    Volume667-669
    ISSN (Print)0255-5476

    Other

    Other5th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD5
    Country/TerritoryChina
    CityNanjing
    Period3/21/113/25/11

    All Science Journal Classification (ASJC) codes

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

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