STUDY OF HYDROGENATED Ti-6Al-4V ALLOY SUBJECT TO MECHANICAL IMPACT AND ELECTRON IRRADIATION

10.25712/ASTU.1811-1416.2024.02.011

Abstract

The properties of hydrogenated Ti-6Al-4V alloy (hydrogen content 0.002 wt. % and 0.23 wt. %), subjected to mechanical rupture (from 25 to 450 MPa), and irradiation by pulsed electron beam treatment with an electron flow with an energy of 18 keV up to 25 J/cm² and duration 15 μs. In particular, the thermopower of the alloy was measured under the indicated influences. The role of individual components of aluminum and vanadium in relation to changes in the thermoelectric properties of the alloy is noted. Of interest is not only the stabilization of phases, but also the transformation of the alloy under study into a layered medium due to hydrogenation and fixation of hydrogen in traps. The change in the Seebeck coefficient S of the Ti-6Al-4V alloy for different conditions varies in the range (from 0.003 to 0.0011) mV/K and is accompanied by an inversion of the thermopower sign, in particular for commercial vanadium. The values of the thermopower of the Ti-6Al-4V alloy were compared with the values of the thermopower of technical titanium VT1-0 based on the change in the density of states at the Fermi level. It is assumed that this kind of alloy may be suitable, due to its stability and strength properties, for use in systems for monitoring the properties of implants and non-traditional energy.