Determination of the temperature interval of direct and reverse martensitic transformation in Ti-Nb alloys by means of electrical resistance and differential thermal analysis

In various fields of science and technology, in chemical production, in the fields of food and medicine, the use of binary and multicomponent titanium alloys with different concentrations of chemical elements, which differently affect the phase composition of the alloys and the course of phase transformations, creates the need to study the processes of the formation of metastable phases and structural transformations. Because of the combined influence of thermal and mechanical processing of the concentration of titanium chemical elements on the nature of phase transformations is poorly investigated, a thorough study of binary titanium alloys with such a b-isomeric element as niobium is required. Its concentration in the Ti-Nb binary alloy determines some features of the martensitic transformation, for example, the tempering-slackening process, which distinguishes it from other alloys. This is the essential importance when comparing the similarities and differences of the mechanism of the metastable phase formation in other titanium alloys during determination of the second component of diffusion mobility in titanium alloys. The aim of the study was to investigate the shape memory effect in Ti-Nb binary alloys at different Nb concentrations. To determine the superelasticity and damping capacity. To measure the temperatures of the direct and reverse martensitic transformations in the alloy of a given concentration. To determine the reactive tension generated during shape recovery.