Investigation of Metallic and Ceramic Materials by Small-Angle Neutron Scattering |
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Authors: | Yu I Smirnov N O Elyutin |
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Affiliation: | (1) Moscow Engineering Physics Institute (State University), Kashirskoe sh. 39, Moscow, 115409, Russia |
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Abstract: | Small-angle neutron scattering measurements on a double-crystal spectrometer with perfect monochromator and analyzer crystals were used to follow microstructural changes in the aluminum alloy VD-17, refractory alloy ZhS-6, and dispersion-hardened zirconia-based ceramics with yttria additions. The measurements were carried out by the Warren method, involving determination of the small-angle neutron attenuation coefficient. The experimentally determined total macroscopic small-angle scattering cross section is correlated with different parameters characterizing external influences on the material: the number of loading cycles, heat-treatment temperature, and fracture stress. The potential of the proposed approach for optimizing processing technologies is discussed. |
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