Using the method of molecular dynamics, peculiarities of structural rearrangements in nanofibers of the intermetallic compound Ni3Al, containing long-period antiphase boundaries were investigated in the course of high-speed uniaxial tensile loading along the <001> direction. Four principal stages of deformation (quasielastic, plastic, flow, and failure) were identified, in each of which characteristic features of structure-energy transformation peculiar for this stage were observed. It was found that the presence of planar defects in long-period nanostructure exerts a considerable effect on the variation of the onset of plastic deformation stage.

Mechanisms of Structure Rearrangements in a Nanofiber Model of Intermetallic Compound Ni3Al, Containing Long-Period Antiphase Boundaries, in the Course of High-Speed Uniaxial Tensile Loading. Potekaev, A.I., Starostenkov, M.D., Sinitsa, N.V., Yashin, A.V., Kharina, E.G., Kulagina, V.V.: Russian Physics Journal, 2011, 53[8], 818-26