ELFT HÍRADÓ

[Katona Gábor <katona.gabor AT science.unideb.hu>]

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*  Debreceni Egyetem Szilárdtest Fizikai Tanszék  *
*                                                 *
*                   SZEMINÁRIUM                   *
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             2024. január 19. (péntek)
                       11:00

                    Ungár Tamás
             professzor emeritus, ELTE

      Diffraction patterns for microstructure
             in crystalline materials


   Debreceni Egyetem, Szilárdtest Fizikai Tanszék
                   Előadó terem
              Debrecen, Bem tér 18/b.


        Minden érdeklődőt szívesen látunk.


Absztrakt
Microstructural features including dislocation density, crystal size, 
and other defects control the mechanical response, e.g., strength, 
ductility etc. of materials.  Neutron and x-ray diffraction provide the 
ability to quantitatively and non-destructively determine several 
microstructural features that can subsequently be used in microstructure 
aware models to predict materials performance. Many different features 
of diffraction peaks like breadths, shape, asymmetry, shifts or hkl 
anisotropy can be related to lattice defect properties confirmed by 
different electron microscopy methods. The power of diffraction peak or 
line profile analysis (LPA) will be demonstrated by showing the 
determination of lattice defect densities and types in plastically 
deformed and neutron or proton irradiated structural materials. Several 
examples will show how constructively complementary the LPA method can 
be to electron microscopy.

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