caa a22 4500 475810872 CHVBK 20180406123758.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1007/BF02699372 doi (NATIONALLICENCE)springer-10.1007/BF02699372 Dependence of the titanium structure formed under high-rate loading on its initial state [Elektronische Daten] [M. Bondar', O. Pervukhina] The structure of titanium specimens with different grain sizes and initial defect density that were subjected to large high-rate strains is studied, and the critical parameters of the onset of an unstable plastic flow in the specimens are determined. It is established that the formation of a titanium structure and the critical parameters governed by this structure are determined mainly by twinning. Twinning in shock-loaded titanium is the mechanism of plastic deformation that ensures the minimum change in the internal energy. Twinning in titanium under high-rate strain develops at the earlier stages over all admissible twinning systems and results in fragmentation of the structure. The twins are not the structural elements that contribute to the evolution of a uniform plastic strain. Fragmentation of the structure in the formation of twins decreases the critical parameters of the onset of an unstable plastic flow. It is found that as the strain increases, the twins fill the material up to a certain limit level, after which energy relaxation occurs owing to the formation of adiabatic-shear bands and/or cracking. The titanium structure formed in the deformation is highly stable. Kluwer Academic/Plenum Publishers, 2000 Bondar' M. Lavrent'ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk aut Pervukhina O. Lavrent'ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk aut Combustion, Explosion and Shock Waves Springer US 36/2(2000-03-01), 261-271 0010-5082 36:2<261 2000 36 10573 https://doi.org/10.1007/BF02699372 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02699372 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bondar' M. Lavrent'ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk aut NATIONALLICENCE 700 1- Pervukhina O. Lavrent'ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, 630090, Novosibirsk aut NATIONALLICENCE 773 0- Combustion, Explosion and Shock Waves Springer US 36/2(2000-03-01), 261-271 0010-5082 36:2<261 2000 36 10573 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer