X-ray Diffraction Data for the Study of the Multilevel Nanostructures in Ni3Fe Deformed Single Crystals

X-ray analysis has been applied for the study of the formation of nanostructures as the result of plastic deformation in Ni3Fe single crystals with the L12 structure. It was shown that the main structural changes in ordered alloys had the features similar to pure metals and the disordered solid solutions but were more complex. Structure consists of nano-crystallites divided by the antiphase boundaries forming the elements having the size a ten times smaller than the dimensions of the crystallites. After the strain of 0.18 together with the antiphase domains with the average size equal to 14 nm a small fraction of domains with an average size of 10-11 nm was revealed. After the strain of 0.38 or more, the average size of the antiphase domains was reduced to 5-2 nm.