About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmental Degradation of Multiple Principal Component Materials
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Presentation Title |
On the High-temperature Oxidation of Complex Concentrated Alloys FeAlCrNixVy |
Author(s) |
Eliska Jaca, Peter Minarik, Stanislav Daniš, Jozef Veselư |
On-Site Speaker (Planned) |
Eliska Jaca |
Abstract Scope |
An ongoing call for materials capable of operating at high temperatures has led to the development of numerous structural alloys such as Ni-based superalloys. In recent years, much hope was also put into Complex concentrated alloys – alloys consisting of multiple elements. Our department developed equimolar alloy FeAlCrNiV possessing promising mechanical properties up to 800 °C. We focused on further characterization of its oxidation behavior. A series of FeAlCrNixVy samples was made to examine in detail the effect of vanadium which seems to play a crucial role in the kinetics of the oxidation. Our findings have shown that vanadium, even in a reduced amount, deteriorates oxidation resistance of the material. Presumably, the formation of V2O5 impairs alumina and chromia scale and thus limits the resistance to high-temperature oxidation. Furthermore, the detailed characterization of the formed oxide scale revealed formation of complex oxides and presence of oxides in rare modifications. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Environmental Effects, High-Temperature Materials |