Structural-phase transformations in α-Ti under different types of deformation at room temperature
Shurygina N.A., Sundeev R.V., Shalimova A.V., Veligzhanin A.A., Blinova E.N., Glezer A.M., Chernogorova O.P.
Abstract
A study of the phase transformation in technically pure titanium under different types of deformation: high pressure and high pressure torsion (HPT). The set of modern methods of the study included microindentation, X-ray diffraction, transmission electron microscopy, as well as EXAFS spectroscopy in synchrotron radiation for detailed studying a local atomic structure of phases. The correlation between the phase transformation course and the deformation method has been found. It has been shown that in contrast to pressure without a shear component, the shear deformation under high pressure at room temperature contributes to the occurrence of a high-temperature β-phase with a local atomic order different from that in the initial phase.