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.
The paper presents the results of studies of the structural state, changes in mechanical characteristics during static and cyclic loading of welded joints from technically pure titanium during thermal cycling. Based on the change in the relative deflection of the sample, a quantitative assessment of the fatigue damage accumulation at the stage of cyclic deformation up to the moment of opening and propagation of the main crack depending on the number of cycles of thermal cycling treatment is provided.
Alternative Thermal Cycling Treatment to Produce Abnormal Grain Growth in FeMnAlNi Alloys: Study of Composition Variations and Effects on the Relative Phase Stabilities
