The slip system activity in individual grains of a plastically deformed Zircaloy-2 specimen was determined by micro-diffraction X-ray line profile analysis measurements. The grain to grain orientation map was determined by electron back-scattering diffraction and this was used for orienting individual grains to produce specific Bragg reflections. Anisotropic X-ray line broadening was evaluated in terms of dislocation densities, the average sub-grain size and slip activity. Slip line traces were evaluated in the electron back-scattering diffraction micrographs in correlation with the grain orientation. The X-ray and electron back-scattering diffraction correlation indicated that <a>-type dislocations with considerable prismatic slip activity dominated plastic deformation in this alloy and that, with increasing dislocation density, the fractions of <a>- and <c>-type dislocations increased.

Grain to Grain Slip Activity in Plastically Deformed Zr Determined by X-ray Micro-Diffraction Line Profile Analysis. T.Ungár, O.Castelnau, G.Ribárik, M.Drakopoulos, J.L.Béchade, T.Chauveau, A.Snigirev, I.Snigireva, C.Schroer, B.Bacroix: Acta Materialia, 2007, 55[3], 1117-27