Bragg edge imaging experiments were carried out at the BOA beamline of the Paul Scherrer Institute on ring-shaped specimens cut at different axial positions of an unfinished, partially deformed, Zircaloy 4 tube. The height of the \((10\overline{1 }0)\) and \((11\overline{2 }0)\) Bragg edges was taken as indicative of the rotation of the grains around the c-axis during plastic deformation. Maps of these Bragg edge heights were constructed at each axial position to elucidate how this grain rotation changes along the hoop-radial plane. The results were consistent with neutron diffraction data, showing that the initial texture is dominated by the \((11\overline{2 }0)\) // axial fiber, and during deformation the \((10\overline{1 }0)\) // axial fiber became increasingly important at the expense of the first fiber.

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Spatially Resolved Evaluation of Texture Variations in Cold-Rolled Zircaloy-4 Cladding by Bragg Edge Imaging

  • Florencia Malamud,
  • Miguel A. Vicente Alvarez,
  • Valentina Stella,
  • Javier R. Santisteban,
  • Markus Strobl

摘要

Bragg edge imaging experiments were carried out at the BOA beamline of the Paul Scherrer Institute on ring-shaped specimens cut at different axial positions of an unfinished, partially deformed, Zircaloy 4 tube. The height of the \((10\overline{1 }0)\) and \((11\overline{2 }0)\) Bragg edges was taken as indicative of the rotation of the grains around the c-axis during plastic deformation. Maps of these Bragg edge heights were constructed at each axial position to elucidate how this grain rotation changes along the hoop-radial plane. The results were consistent with neutron diffraction data, showing that the initial texture is dominated by the \((11\overline{2 }0)\) // axial fiber, and during deformation the \((10\overline{1 }0)\) // axial fiber became increasingly important at the expense of the first fiber.