About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Thermodynamics of Materials in Extreme Environments
|
| Presentation Title |
J-9: Thermodynamic Properties of Special Alloys of the Ti-Al System Formed during Synthesis |
| Author(s) |
Borys Sereda, Yuriy Belokon, Irina Kryhliak, Dmytro Sereda |
| On-Site Speaker (Planned) |
Borys Sereda |
| Abstract Scope |
The study of thermodynamic properties during the production of intermetallic titanium-aluminum alloys under the conditions of thermochemical pressing, suggested the following sequence of formation of intermetallic compounds TiAl3 → Ti3Al → TiAl. Thermodynamic analysis showed that for the Ti-Al system the adiabatic combustion temperature is lower than the melting temperature of the final product - intermetallic coupling, which is an insufficient condition for the SHS reaction under normal conditions. The synthesis reaction requires preheating of the system to a temperature of 400-600 K. Also, based on thermodynamic analysis, the sequence of SHS reactions, which lead to the formation of γ-TiAl alloys, helps to clarify the mechanism of their formation. |