About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Environmental Degradation of Multiple Principal Component Materials
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Presentation Title |
Novel Refractory Metal-based High Entropy Silicide-Borides and their Oxidation at 1100°C |
Author(s) |
Mathias C. Galetz, Anke Silvia Ulrich, Georg Hasemann, Manja Krüger |
On-Site Speaker (Planned) |
Mathias C. Galetz |
Abstract Scope |
The invention and development of new high temperature structural metallic materials that can be employed beyond the paradigm of Ni-based alloys is one of the greatest challenges in materials science and engineering today. Refractory high-entropy silicide-borides (HESB) introduce a new field of high temperature materials by combining metallic high-entropy alloys (HEAs) with intermetallics based on a refractory metal (RM)-silicon-boron alloys, well known from Mo-Si-B alloys. In this work, three different silicon and boron containing alloys (RM-15Si-5B), equiatomic in their four- or five-component refractory metals, were manufactured using arc-melting. These three HESBs with the compositions 20Mo-20V-20Cr-20Ti-15Si-5B, 20Mo-20V-20Nb-20Ti-15Si-5B and 16Mo-16V-16Nb-16Cr-16Ti-15Si-5B were oxidized at 1100°C for 100 h in a TGA. Their scale formation is discussed in comparison to MoSiB alloys. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, High-Entropy Alloys, Environmental Effects |