Effect of structure and phase composition on the physical and mechanical properties of hot extruded titanium alloy Ti–3Al–2.5V tubes

This study investigates the impact hot extrusion process variables on physical and mechanical properties of Ti–3Al–V alloy The research examines four tube segments extracted from various hot-extruded tubes Ti–3Al–2.5V alloy, with an outer diameter (OD) 90 mm a wall thickness 20 mm. manufacturing involves expanding sleeves horizontal hydraulic press to achieve OD 195 mm, followed by heating 850–865 °C prior extrusion. are labeled as 1 , 2 3 4 corresponding their order production. Our findings demonstrate that increase in number extrusions α + β area leads reduction primary α-phase volume fraction β-transformed structure fraction. These changes attributed higher final temperature resulting more intense deformation during tooling (die mandrel) processes. Additionally, elevating notable decrease residual β-solid solution “sharpness” tangent-oriented texture. alterations structural phase state found influence contact modulus elasticity microhardness. identified relationships can be utilized optimize for multiple tubes.