Scientists of the High-energy and Special Materials Research Laboratory of the Faculty of Physics and Engineering together with their partner Brunel University (London) are engaged in creating new recipes of light alloys used in the aerospace industry, shipbuilding, electrical engineering, mechanical engineering, and other areas. Researchers selected the optimal compositions of alloys and composites containing nanoparticles for improving the physical properties of new materials, making them lighter and stronger.
The technical difficulty lies in the fact that micro- and nanoparticles the provide the desired properties to the alloy have a poor wettability by the liquid metal. In addition, because of their small size, they tend to stick together.
The team of scientists at the TSU Faculty of Physics and Engineering managed to find a completely new solution to this problem. They added refractory particles in a special ligature and affected it with a shock wave. The result is a very tight aluminum rod with a concentrated content of nanoparticles possessing the desired properties. The new method increases the strength characteristics of the light alloys by 20-25 percent. This improves other properties of the metal, for example, its thermal conductivity.
- Mathematical modeling of processes occurring in the manufacture of ligatures and composite alloys would help to reduce the work time and determine which combinations of particles are optimal for the production of new materials, - says Elizabeth Pikushiak, Associate Professor of TSU Faculty of Physics and Engineering and a member of the development team. - Practical work is carried out both in our laboratory and at Brunel University, which has a large technology center. Our colleagues in London willingly provide us the opportunity to use their infrastructure and equipment.
TSU together with Brunel University is involved in a major international project Physical processing of molten light alloys under the influence of external fields, in cooperation with 30 organizations, including the European Space Agency, Airbus, and Rover