| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
High Entropy Materials: Concentrated Solid Solutions, Intermetallics, Ceramics, Functional Materials and Beyond IV
|
| Presentation Title |
F-11: The Research Thermochemical Pressing Modes of Dual-phase Special Alloys for Obtaining Rational Intermetallic Structure |
| Author(s) |
Borys Sereda, Yuriy Belokon, Irina Kruhliak, Dmytro Sereda |
| On-Site Speaker (Planned) |
Dmytro Sereda |
| Abstract Scope |
The purpose of this work is to investigate the structure formation in intermetalide γ-TiAl alloys by using a complex plastic deformation technology under non-stationary temperature conditions with niobium doping. Also in given work, the using of Hall-Patch model, the interrelation of the nanostructured quantities with strength characteristics is considered. It allows to obtain materials with increased plasticity by an optimal combination of mechanical properties over a wide range of temperatures. It is established that the doping of γ-TiAl alloys with niobium (7...8% by weight) and increasing the degree of plastic deformation under extrusion conditions at a deformation temperature of 1100 оС can significantly reduce the grain size in the final product (up to 10...12 μm) and forms a two-level structure with nano-lamellar colonies with a distance of up to 500 nm. |