Neutron diffraction study of extruded magnesium during cyclic and elevated temperature loading

E. C. Oliver, M. R. Daymond, P. J. Withers

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Abstract

    Neutron diffraction has been used to study the progress of deformation twinning and intergranular strain evolution in extruded magnesium during cyclic and monotonic loading at two temperatures. Differences in the intergranular strains generated during tensile and compressive tests are attributed to the operation of twinning in compression. Twinning activity is reduced relative to slip at higher temperature, leading to greater similarities between tension and compression. During cyclic loading, a distinct Bauschinger effect is observed after each compressive loading stage. The origin of this effect is identified as me reversal of twinning during unloading and subsequent tensile loading.
    Original languageEnglish
    Title of host publicationMaterials Science Forum|Mater Sci Forum
    Pages257-262
    Number of pages5
    Volume490-491
    Publication statusPublished - 2005
    Event7th International Conference on Residual Stresses, ICRS-7 - Xi'an
    Duration: 1 Jul 2005 → …
    http://<Go to ISI>://000230305200061

    Publication series

    NameMaterials Science Forum

    Other

    Other7th International Conference on Residual Stresses, ICRS-7
    CityXi'an
    Period1/07/05 → …
    Internet address

    Keywords

    • Intergranular stress
    • Magnesium
    • Plasticity
    • Twinning

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