Abstract
Abstract Fe–30 wt.%Ni alloy was severely plastic deformed through surface mechanical attrition treatment (SMAT) for different times and the nanocrystalline surface layers were produced on surface. The microstructural parameters such as the average crystallite size, root mean square microstrain, dislocation density and stored elastic energy were measured by using X-ray diffraction line profile analysis (XLPA) and transmission electron microscopy (TEM). The high values of dislocation density and stored elastic energy were obtained in the SMAT samples. The average crystallite size measured by XLPA is compared with that observed on TEM. The high-resolution TEM (HRTEM) micrograph confirms the presence of high density of dislocations obtained by XLPA, accompanying the presence of heavy distortion of lattice, which is different from that in the tensile-deformed sample.
Published Version
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