The Microstructural State and Characteristics of the Deformation and Fracture, Energy Dissipation and Accumulation in Deformed Ultrafine-Grained Alloys Based on Titanium, Niobium, and Magnesium for Medical Applications

The results of the study of the microstructure, physical and mechanical characteristics, processes of the energy dissipation and accumulation under tension in technical titanium and in Ti–45Nb, Mg–2.9Y–1.3Nd alloys in the coarse-grained (CG) and ultrafine-grained (UFG) states have been summarized. It has been found that substructural strengthening of ultrafine-grained technical titanium results in a change in deformation and thermal behavior, especially at the initial stage of deformation. It has been found that dispersion strengthening of Ti–45Nb alloy with the ω-phase nanoparticles and Mg24Y5 intermetallics, and of Mg–2.9Y–1.3Nd alloy with the β-, β′-, and β1-phase precipitates reduces the influence of the UFG structure on the patterns of energy accumulation and dissipation under tension at the initial stage of deformation.