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Isotropic small-angle scattering (SAS), ie without azimuthal dependence around the primary beam, occurs only for specific configurations of the scattering objects if single-crystalline material is studied. In the case of decomposing Ni-base alloy single crystals, SAS signals are generally highly anisotropic. From the analysis of 2-dimensional SAS patterns, it is possible to extract important information on the evolution of the morphology and on the 3-dimensional spatial arrangement of the precipitates from the early stages of decomposition. The real-space information obtained from transmission electron microscopy (TEM) is an excellent complement to the reciprocal-space information extracted from SAS data. The complementarity of these 2 techniques offers a valuable approach to study precipitation phenomena.

Additional information

Authors: SEQUEIRA A D, Eidgenoessische Technische Hochschule Zürich, Institut für Angewandte Physik (CH);KOSTORZ G, Eidgenoessische Technische Hochschule Zürich, Institut für Angewandte Physik (CH);PEDERSEN J S, Risø National Laboratory, Department of Solid State Physics, Roskilde (DK)
Bibliographic Reference: Article: Journal of Applied Crystallography (1996)
Record Number: 199710178 / Last updated on: 1997-04-01
Original language: en
Available languages: en