Purpose of the development: To modify the surface layers of light structural alloys by ultrasonic percussion treatment and introduce non-traditional athermic methods of strengthening in engineering of metal surfaces to enhance the physicomechanical characteristics of products and structures used in various industries.

Recommended application field: Biomedical engineering, aircraft and automotive and other engineering industries to increase the operational life of parts, assemblies and products of light structural alloys and structures in general.

Advantages over analogues: It has no analogues in the world practice of surface engineering. - more effective (compared to traditional thermomechanical processing) strengthening the surface of the part due to low-temperature mechanical nanostructuring in terms of quasi-hydrostatic compression; - an increase in the thickness of the modified layer and the microhardness (up to 500%) of the surface of the products by the use of ultrasound in liquid nitrogen; - improvement of the adhesive bond between hard coatings (precipitated by chemical or physical methods) and the lining due to the previous strengthening of the ultrasonic coating; - increase the service life of medical products (titanium hip implants) due to the application of regular biomimetic surface relief - a grid of cylindrical recesses.

The development stage readiness: Tested experimental exploitation order

Description of the development:
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Fundamentally new scientific knowledge has been obtained regarding the physical and material science foundations and laws of hardening the surface layers of light structural alloys by means of ultrasonic percussion treatment at cryogenic temperatures. These patterns are due to the suppression of the processes of dynamic return and dynamic recrystallization, as well as the effect of annihilation of dislocations under the action of the factor of deep cooling. The possibility of the formation of nitride compounds in the surface layers due to the phenomenon of mechanodynamic diffusion of nitrogen atoms from the external environment in the process of cryodeformation is proved. A distinctive feature of the results obtained from domestic and foreign analogues is the surface treatment of the material at cryogenic temperatures under hydrostatic compression instead of the well-known methods of cryodeformation of the entire volume of the material.

Information about newness of the development:
there are inventor's certificate -- 4 items
there are Ukrainian patents -- 20 items

corresponds technical description
Guarantees stable results getting

Possibility of transfer abroad:
Combinated reduction to industrial level
Joint production, sale, exploitation

Photo

Country Ukraine

For additional information turn to:
E-mail: gal@uintei.kiev.ua