Martensite Transformation and Superelasticity at High Temperature of (TiHfZr)74(NbTa)26 High-Entropy Shape Memory Alloy

In this work, a (TiHfZr)(NbTa)26 (%at) high-entropy quinary alloy has been developed especially for high-temperature superelastic applications and studied over large range of temperatures. The mechanical properties new material were compared with those other alloys. different ingots have made in cold crucible from pure metals. Several thermomechanical treatments performed on the microstructure four alloys among them alloy. each characterized by differential scanning calorimetry (DSC), electron microscopy (SEM), x-ray diffraction technique (XRD) behavior was investigated through three-point bending tests between − 40 200 °C, quasi-static monotonic low cycle loading conditions. effects static cyclic responses analyzed combination investigations It shown that presents martensitic transformation effect temperatures, cold-worked state or after solution treatment. Finally, obtained experimental results demonstrating features