Mechanisms of High-Speed Deformation
of Polycrystalline Copper
R. G. Chembarisovaa*, Y. Dongb, and I. V. Alexandrova
Translated by A. Kazantsev
a Ufa State Aviation Technical University, ul. K. Marksa 12, Ufa, 450000 Bashkortostan, Russia
b College of Materials Science and Technology, Nanjing, 210016 People’s Republic of China
Correspondence to: * e-mail: chroza@yandex.ru
Received 16 August, 2016
Abstract—The mechanisms of high-speed deformation of ultrafine-grained copper produced during severe plastic deformation by equal-channel angular pressing were analyzed using numerical modeling in comparison with those in the case of coarse-crystalline copper. The activity of annihilation processes during nonconservative motion and double cross slip of dislocations was estimated. Their effect on the macroscopic behavior of samples is shown.
DOI: 10.1134/S1063783417050067