Influence of cold deformation and heat treatment on structure, texture and properties of titanium pseudo-β-alloy

Abstract

The effect of cold plastic deformation and heat treatment on the phase composition, structure, texture, and mechanical properties of sheets of pseudo-β-titanium alloy VT35 has been studied. It has been established that after cold rolling of sheet semi-finished products, a multicomponent texture (111) + (112) + (100) is formed, which during subsequent heat treatment is transformed into a similar texture but with a lower degree of texturing. A generalized diagram of phase and structural transformations with temperature-time conditions for the onset of polygonization, recrystallization, and decay of the β-phase was constructed. It is shown that, subject to the sequence and kinetics of the processes occurring during heat treatment, it is possible to form a structure of various types in the alloy, which makes possible to change its technological and mechanical properties in a wide range.