Lattice rotations of individual bulk grains. Part 1: 3D X-ray characterization

Publication: Research - peer-reviewJournal article – Annual report year: 2003

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Three-dimensional X-ray diffraction has been applied to characterise the plastic deformation of individualgrains deeply embedded in a 99.6% pure aluminium specimen. The specimen is 4 mm thick with an average grain size of 75 μm. The average latticerotation for each grain as well as the degree of internal orientation spread within the grain is measured in-situ during 6% elongation. The rotation paths for 95 grains with nearly random initial orientations are reported. The quality of this data set is sufficient to make distinctions between plasticity models. The rotation paths exhibit a clear dependence on the initial orientation, while the influence of grain interaction is relatively small. All grains deform plastically. Averaged over grains and reflections the rotation of the tensile axis and the FWHM of the internal spread is 2.0 and 0.8°, respectively, at 6% strain.
Original languageEnglish
JournalACTA MATERIALIA
Publication date2003
Volume51
Issue13
Pages3821-3830
ISSN1359-6454
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 67

Keywords

  • Plastic deformation, X-ray diffraction, Aluminium, Texture, Synchroton radiation
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