Defect Structure and Thermomechanical Stability
of Nano- and Microcrystalline Titanium Obtained
by Different Methods of Intense Plastic Deformation
V. I. Betekhtina*, V. Sklenickab, A. G. Kadomtseva, Yu. R. Kolobovc, and M. V. Narykovaa
Translated by V. Potapchouck
a Ioffe Institute, Russian Academy of Sciences, St. Petersburg, 194021 Russia
b Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Brno, Czech Republic
c Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432 Russia
Correspondence to: * e-mail: vladimir.betekhtin@mail.ioffe.ru
Received 24 October, 2016
Abstract—Mechanical stability under prolonged loading and thermostability under annealing have been studied for nano- and microcrystalline titanium obtained by different methods of intense plastic deformation. The effect of nanoporosity and the fraction of high angle boundaries formed due to intense plastic deformation has been revealed and analyzed. It has been established that, depending on the loading or the annealing temperature, thermomechanical stability of titanium can be affected, apart from the above structural characteristics, by either twin grain boundaries or titanium-carbide disperse particles.
DOI: 10.1134/S1063783417050043