Grain size dependent microstructure and texture evolution during dynamic deformation of nanocrystalline face-centered cubic materials

Evolution of microstructure and texture in nanocrystalline (nc) face-centered cubic materials subjected to high-strain-rate compression are investigated. Three nc materials, differing in grain size or stacking fault energy, namely, 27 nm Ni, 70 nm Ni, and a 27 nm NiCo alloy are deformed under high strain rates (8000–23000 s −1 ) using the split-Hopkinson pressure bar technique. The transmission Kikuchi diffraction technique and discrete-crystal...