Simultaneous measurement of the strain tensor of 10 individual grains embedded in an Al tensile sample

R.V. Martins, L. Margulies, Søren Schmidt, H.F. Poulsen, T. Leffers

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    First results are presented on the simultaneous observation of the elastic strain tensor as a function of load of 10 individual grains, deeply embedded in the bulk of a polycrystalline Al tensile sample. The experimental technique is based on the use of focused high energy synchrotron radiation in transmission geometry. After each load step diffraction patterns are collected with a large-area X-ray detector system for a series of different angular and lateral sample positions. An automated indexing routine was used to assign sets of diffraction spots to individual grains. The strain tensor components as well as the individual grain position within the sample were then fitted from the diffraction spot positions. A maximum tensile load of 48 MPa was applied. Deviations in strain of up to 600 × 10−6 are observed between respective strain components of individual grains.
    Original languageEnglish
    JournalMaterials Science and Engineering: A - Structural Materials: Properties, Microstructure and Processing
    Volume387-389
    Pages (from-to)84-88
    ISSN0921-5093
    DOIs
    Publication statusPublished - 2004
    Event13th International Conference on the Strength of Materials - Budapest, Hungary
    Duration: 25 Aug 200330 Aug 2003
    Conference number: 13

    Conference

    Conference13th International Conference on the Strength of Materials
    Number13
    CountryHungary
    CityBudapest
    Period25/08/200330/08/2003

    Keywords

    • Stress–strain relationship measurements
    • X-ray diffraction
    • Synchrotron radiation

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