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This article is cited in 6 scientific papers (total in 6 papers)
International conference ''Phase transitions, critical and nonlinear phenomena in condensed matter'', Makhachkala, September 6-9, 2017
Dynamics of Cell
Structural aspects of deformational amorphization of Ti$_{50}$Ni$_{25}$Cu$_{25}$ crystalline alloy under high pressure torsion
R. V. Sundeevab, A. V. Shalimovab, A. M. Glezerbc, E. A. Pechinad, M. V. Gorshenkovc a Moscow Technological University (MIREA), Moscow, Russia
b Bardin Central Research Institute for Ferrous Metallurgy, Moscow, Russia
c National University of Science and Technology «MISIS», Moscow
d Physical-Technical Institute Ural Branch of RAS
Abstract:
The evolution of the structure of the Ti$_{50}$Ni$_{25}$Cu$_{25}$ crystalline alloy during high-pressure torsion at room temperature has been studied. The torsional moment variation curve as a function of the strain value was fixed in situ, which allowed directly observing the transition of the material from the crystalline state to the amorphous state during the HPT. It was found that the amorphization of the material in the course of the HPT begins on the grain boundaries and fragments of the crystalline phase. Amorphized boundaries form a “grain-boundary carcass” in the cells of which the high-defect nanocrystalline phase is formed. Growth of deformation leads to broadening of the “grain-boundary carcass,” loss of stability of the crystalline phase, and, as a consequence, to the phase transition "crystal $\to$ amorphous" state.
Citation:
R. V. Sundeev, A. V. Shalimova, A. M. Glezer, E. A. Pechina, M. V. Gorshenkov, “Structural aspects of deformational amorphization of Ti$_{50}$Ni$_{25}$Cu$_{25}$ crystalline alloy under high pressure torsion”, Fizika Tverdogo Tela, 60:6 (2018), 1157–1161; Phys. Solid State, 60:6 (2018), 1168–1172
Linking options:
https://www.mathnet.ru/eng/ftt9169 https://www.mathnet.ru/eng/ftt/v60/i6/p1157
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