The TSU Laboratory of Physics of High-Strength Crystals was the first in the world to obtain an alloy structure that gives them a special ability to deform and restore the original shape by up to 15%. The researchers were able to achieve the maximum values that scientific teams specializing in the development of shape memory alloys are striving for. Materials with a gigantic reversible deformation value are intended for the space industry, robotics, and microsystem technologies.
The results of the TSU physicists' research will serve as the basis for creating new structural and functional materials with high-entropy alloys, adapted for space and the Arctic.
Physicists managed to get even closer to the optimal indicators when working with ferromagnetic alloys NiFeGa (Co) and CoNiAl. Researchers around the world are aiming for 16 %, which is the theoretical deformation resource.
The high results obtained by the staff of the laboratory on ferromagnetic materials can make the materials suitable for the development of thermally and magnetically controlled force elements used in the space industry and robotics (in mechanisms for fingers or toes of robots, and others). Also, their ability to deform and return to the original state can be useful in fire alarms. When the room temperature rises, the material will change shape and trigger the fire safety system.
An important requirement for the practical application of materials with high reversible deformation is the stability of the reversible deformation value during operation and functional fatigue life. In this regard, the TSU physicists are planning to conduct studies of the cyclic stability of the obtained properties to achieve stable performance characteristics and further introduction of these materials into production.