MODELING OF LINEAR AND SQUARE STRUCTURE FACTORS OF SIZE EFFECTS IN THE THEORY OF THE DIFFUSE X-RAY SCATTERING BY POLYCRYSTALLINE SOLID SOLUTIONS

Author(s): Krisko О.V., Skorobogatova Т.V., Silonov V.М.

Rubric: Methodological research

DOI: 10.21777/2500-2112-2018-1-74-84

Release: 2018-1 (22)

Pages: 74-84

Keywords: solid solutions of metals, diffuse X-ray scattering, short-range order, size effect, elastic constants of metals

Annotation: The method of modeling of diffuse X-ray scattering by polycrystalline metal solid solutions due to distortions of ideal lattice because of difference in the sizes of atoms (dimension effect) is considered. Macroscopic and microscopic models of calculation of structure factors of size effects were compared. It is shown that the linear structure factor in microscopic and macroscopic model differ slightly. The square structure factor calculated in macroscopic model considerably differs from a square structure factor calculated by microscopic model. In work it is concluded that at model operation use of microscopic model is necessary. It is shown that calculated intensity of diffuse X-ray scattering by metal solid solution considerably depends on order parameters even at the small difference of components form factors.

Bibliography: Krisko О.V., Skorobogatova Т.V., Silonov V.М. MODELING OF LINEAR AND SQUARE STRUCTURE FACTORS OF SIZE EFFECTS IN THE THEORY OF THE DIFFUSE X-RAY SCATTERING BY POLYCRYSTALLINE SOLID SOLUTIONS // Education Resources and Technologies. – 2018. – № 1 (22). – С. 74-84. doi: 10.21777/2500-2112-2018-1-74-84