TY - JOUR

T1 - Structural transformations in single-crystalline titanium under high-pressure cold and cryogenic deformation

AU - Pilyugin, V.P.

AU - Khlebnikova, Y.V.

AU - Egorova, L.Y.

AU - Suaridze, T.R.

AU - Resnina, N.N.

AU - Patselov, A.M.

PY - 2015

Y1 - 2015

N2 - © 2015, Pleiades Publishing, Ltd.The structure of an iodide titanium pseudo-single crystal subjected to severe plastic deformation in Bridgman anvils under a pressure of 8 GPa at room (293 K) and cryogenic (80 K) temperatures has been examined using methods of X-ray diffraction analysis and electron microscopy. It has been shown that, in the course of deformation, the original α titanium pseudo-single crystal undergoes the α→ ω transition. A decrease in the temperature of deformation to 80 K leads to the activation of twinning. At degrees of deformation lower than e = 6 titanium deformed at 293 K experiences more substantial strain hardening. In the course of subsequent deformation at 293 K, when e > 6, dynamic recrystallization begins, which is accompanied by the softening of the titanium. A decrease in the temperature of deformation to 80 K suppresses the recrystallization; therefore, the titanium deformed in liquid nitrogen shows a higher increase in the microhardness at degrees of deformation 6 <e <10.

AB - © 2015, Pleiades Publishing, Ltd.The structure of an iodide titanium pseudo-single crystal subjected to severe plastic deformation in Bridgman anvils under a pressure of 8 GPa at room (293 K) and cryogenic (80 K) temperatures has been examined using methods of X-ray diffraction analysis and electron microscopy. It has been shown that, in the course of deformation, the original α titanium pseudo-single crystal undergoes the α→ ω transition. A decrease in the temperature of deformation to 80 K leads to the activation of twinning. At degrees of deformation lower than e = 6 titanium deformed at 293 K experiences more substantial strain hardening. In the course of subsequent deformation at 293 K, when e > 6, dynamic recrystallization begins, which is accompanied by the softening of the titanium. A decrease in the temperature of deformation to 80 K suppresses the recrystallization; therefore, the titanium deformed in liquid nitrogen shows a higher increase in the microhardness at degrees of deformation 6 <e <10.

U2 - 10.1134/S0031918X15120066

DO - 10.1134/S0031918X15120066

M3 - Article

SP - 1203

EP - 1212

JO - Physics of Metals and Metallography

JF - Physics of Metals and Metallography

SN - 0031-918X

IS - 12

ER -