nfluence of Deformation Processing Modes on the Structure and Mechanical Properties of a High-Temperature Titanium Alloy of the Ti–Al–Zr–Si–Mo–Nb–Sn System

To determine the kinetics of phase transformations, a calculated CCTdiagram for a titanium alloy of the Ti-Al-Zr-Si-Mo-Nb-Sn alloying system is obtained.The study of the structure and mechanical properties of the heatresistant alloy of the Ti-Al-Zr-Si-Mo-Nb-Sn alloying system, which are obtained at different temperatures after thermodeformation treatment, is carried out.As established, the deformation treatment carried out in the upper part of the area of the existence of (+)-phases made it possible to increase the strength of the material at the room and operating temperatures and, that is especially important, to increase significantly the plasticity of the material, allowing only a slight decrease on average in its yield strength during short-term tests.As also found, a greater degree of deformation destroys hard silicide layers, distributes silicides more uniformly, increases both the strength and plasticity of the alloy, and slightly reduces the heatresistant properties at 600C.