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