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      A new method for evaluating the size of plate-like precipitates by small-angle scattering

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          Abstract

          A methodology is presented for extracting the thickness and length of plate-like precipitates from streaking that appears in the small-angle scattering pattern of moderately textured polycrystalline samples. This methodology builds upon existing work on single crystals but is extended to polycrystals through a modeling of the streaking misalignment distribution. It is also shown that it is essential to take into account the Ewald sphere curvature. The protocol is applied to anin situsmall-angle X-ray scattering study of the transition between θ′ andT1in an Al–Li–Cu system, where the contributions of both phases are well separated, and the size, volume fraction and number density are monitored.

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          Author and article information

          Journal
          JACGAR
          Journal of Applied Crystallography
          J Appl Crystallogr
          International Union of Crystallography (IUCr)
          0021-8898
          December 2012
          November 2012
          : 45
          : 6
          : 1208-1218
          Article
          10.1107/S0021889812039891
          c76d8c26-f07b-480f-a6ec-0979fbc37354
          © 2012
          History

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