The Influence of Severe Plastic Deformation and Subsequent Annealing on Structure and Mechanical Properties of VT35 Titanium Alloy

The effect of preliminary treatment with subsequent aging on structural-phase state and mechanical properties of β titanium alloy

“…In order to obtain a more uniform distribution of α and β phases in the volume of the alloy under study, workpieces were processed using severe plastic deformation by the method of multiple pressing. It is known that after such processing, a structure with a large number of boundaries and a high density of deformation defects is formed [21,23]. These factors should contribute to a relatively uniform distribution of α and β phases in the bulk of the alloy.…”

“…There are a fairly large number of methods of deformationheat treatment developed for high-alloy titanium alloys [14 -20]. Moreover, an additional increase in the mechanical properties of these alloys is possible due to the formation of an UFG structure using various methods of severe plastic deformation and subsequent heat treatments [21][22][23]. Obviously, the application of these treatments to β titanium alloys will have its own characteristics compared to conventional (α + β) alloys.…”

“…Obviously, the application of these treatments to β titanium alloys will have its own characteristics compared to conventional (α + β) alloys. In particular, it is possible to change the development of the processes of formation and evolution of the microstructure, phase transformations, occurring in UFG titanium alloys directly during severe plastic deformation [24,25] or subsequent heat treatments [21,23]. In connection with the above, in the present work, comparative studies of the effect of annealing (aging) at a temperature of 723 K on the structural-phase state and mechanical properties of the β titanium alloy VT35 (Ti-15V-3Cr-3Al-3Sn-1Mo-1Zr) were carried out after quenching from the β-phase region (1073 K) and various deformation-thermal treatments using the methods of severe plastic deformation.…”