Effect of microstructure anisotropy on the deformation of MAX polycrystals studied by in-situ compression combined with neutron diffraction Deformation behavior of a high-entropy alloy (HEA) was investigated by in situ tensile deformation with neutron diffraction. It was found that the face-centered cubic (FCC) HEA alloy showed strong crystal elastic and plastic anisotropy, and the evolution of its lattice strains and textures were similar to those observed in conventional FCC metals and alloys. Our results demonstrated that, in spite of chemical complexity, the multi-component HEA behaved like a simple FCC metal and the deformation was caused by the motion of mixed dislocations. V C 2014 AIP Publishing LLC. [http://dx.
An X-ray diffraction and computer-simulation study of Cu-Ti metallic multilayers is presented. The results show Cu-Ti artificial metallic multilayers made by magnetron sputtering technique are metallic superlattices with high structure order. An obvious even extinction phenomenon on the X-ray patterns was found and used in the analyses. Taking into account the structural coherence length perpendicular to the layers and the layer-thickness fluctuation in every period, the calculated X-ray diffraction curves are in good agreement with those measured.
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