The Influence of Thermocyclic Treatment on the Structure and Mechanical Properties of Pseudo-Alpha Titanium Alloys for Steam Turbine Blades

Abstract

The influence of thermal cycling treatment of pseudo-α-titanium alloys OT4 and VT20 on their structural and substructural characteristics, as well as their mechanical properties is considered. A significant change in structural characteristics is established. This contributes to an increase in the strength properties of alloys with satisfactory ductility and high-temperature strength.

Influence of Cr-Al-Si-N and DLC-Si Thin Coatings on Wear Resistance of Titanium Alloy Samples with Different Surface Conditions

“…The specified titanium alloy belongs to high-strength pseudo-α-alloys, the structure of which contains α-phase and a slight amount of β-phase (up to 5% mass). BT18U alloy is widely applied in the industry [58,59]; therefore, it was selected as the research object. Samples for experimental studies were cut out of a square section bar of BT18U material.…”

Investigation of the Effect of Thermocyclic Treatment on the Mechanical Properties of Steel

“…The nature of the phase interaction of the components in the system largely determines the effectiveness of the effect of thermocyclic treatment on changes in the structure and properties of alloys. Thermocyclic treatment is not accompanied by a change in the number of phases in the system, and structural changes can only be associated with the consequences of microplastic deformation and subsequent recrystallization [4][5][6][7]. Microplastic deformations cause hardening of the metal, and recrystallization increases its plasticity.…”