Mechanical characterization of high temperature ti based shape memory alloys by tensile test

With today's developing technology, the need for smart materials to be used in space and aviation studies, biomedical, robotic and medical fields is increasing. With more comfortable and practical life, the need to discover new materials in line with demands such as comfortable automotive demand is emerging. It is estimated that their areas of use will increase in the future. The functionality, shape memory effect, lightness and durability of the materials to be obtained have become important. Alloys that can largely regain their original shapes, which change as a result of a certain external force while in martensitic structure, when they pass to the austenite phase temperature are called shape memory alloys. The main reason for this is the solid phase transformations that occur in the internal structure of the material. The shape memory effect and superelasticity properties of shape memory alloys are interesting. In shape memory alloys, shape recovery is provided in the material. Thanks to these features, they are distinguished from traditional alloy systems. Although the memory feature shown at low temperatures is sufficient in application areas such as electronics and biomedical, materials showing shape memory feature at temperatures higher than 100 oC are needed for automobile, aviation and petroleum applications. In this context, Ti-V-Al alloys were preferred in our thesis study to be used in high temperature applications. The mechanical properties of shape memory Ti-V-Al alloys were determined by uniaxial tensile testing and their changes depending on Al content were examined.