Oxidation Resistance of γ-TiAl Based Alloys Modified by C, Si and Y<sub>2</sub>O<sub>3</sub> Microdopants
Pavel A. Loginov,
Georgy M. Markov,
Nataliya V. Shvyndina,
Gleb V. Smirnov,
Evgeny A. Levashov
Affiliations
Pavel A. Loginov
The Laboratory “In Situ Diagnostics of Structural Transformations”, National University of Science and Technology «MISiS», Leninsky Prospect, 4, 119049 Moscow, Russia
Georgy M. Markov
The Laboratory “In Situ Diagnostics of Structural Transformations”, National University of Science and Technology «MISiS», Leninsky Prospect, 4, 119049 Moscow, Russia
Nataliya V. Shvyndina
The Laboratory “In Situ Diagnostics of Structural Transformations”, National University of Science and Technology «MISiS», Leninsky Prospect, 4, 119049 Moscow, Russia
Gleb V. Smirnov
The Laboratory “In Situ Diagnostics of Structural Transformations”, National University of Science and Technology «MISiS», Leninsky Prospect, 4, 119049 Moscow, Russia
Evgeny A. Levashov
The Laboratory “In Situ Diagnostics of Structural Transformations”, National University of Science and Technology «MISiS», Leninsky Prospect, 4, 119049 Moscow, Russia
This work aimed to study the oxidation resistance of γ-TiAl based alloy, doped with small concentrations of carbon, silicon, and yttrium oxide in air at 800 and 1100 °C for 30 h. The TNM-B1 alloy samples were produced via high-energy ball milling, self-propagating high-temperature synthesis, and hot isostatic pressing techniques. The microstructure, oxidation kinetics at 800–1100 °C, scale structure, and oxidation mechanism were studied. The oxidation of alloys modified with carbon and silicon at 1100 °C was characterized by the formation of a three-layer coating. The Y2O3 modified alloy performed the greatest oxidation resistance at 1100 °C and promoted the formation of a dense Al2O3 interlayer.
