Influence of thermomechanical treatment on structure and properties of VT20 titanium alloy workpieces

At present, VT20 titanium alloy is widely used in many industries as a structural material. However, the service life of products made of this material is relatively low. Among the most effective methods of increasing the service properties of titanium alloy is its combined treatment, including sequential thermocyclic and static-pulse treatments. However, in modern scientific and technical literature there is no complete information on the combined effect of these types of treatments on the structure and properties of VT20 alloy, which complicates its practical application. Therefore, this work is aimed at studying the effect of thermocyclic and static-pulse treatments on the structure, hardness, wear resistance and roughness of VT20 alloy samples. The studies were carried out using modern equipment and complementary methods of physical materials science. On the basis of the conducted research aimed at studying the effect of both thermocyclic and static-pulse treatments on the structure, hardness, wear resistance and roughness of VT20 alloy samples it was found that the grain size and roughness of samples decreased by almost an order of magnitude, hardness increased by an average of 1.27 times, and volumetric wear of the sample decreased by 1.88 times. The research was carried out at the expense of the Russian Science Foundation grant no. 24-29-00245, https://rscf.ru/project/24-29-00245/.