| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-130: Understanding Compositional Effects on the Oxidation Behavior of Binary Nb-Ti Alloys |
| Author(s) |
Lauren Bowling, Elizabeth Opila |
| On-Site Speaker (Planned) |
Lauren Bowling |
| Abstract Scope |
Refractory alloys are of interest to aerospace applications due to their high melting points and strength at elevated temperatures. However, refractory metals are notorious for their poor oxidation resistance, as their oxides are non-protective and can allow for fast oxygen diffusion, promote crack propagation/growth, and form gaseous oxides. Rather, complex refractory oxides (e.g., TiNb2O7) are proposed to be more protective, therefore, this work focuses on forming TiNb2O7 from the binary Nb-Ti system. Two Nb-Ti alloys were produced and oxidized in 1% O2-Ar at 1050°C for 20 h to identify and understand the relationship between oxide scale and alloy composition. Micro x-ray diffraction, scanning electron microscopy, and energy dispersive spectroscopy were employed to characterize the oxide scales. Scales were found to mainly comprise of two oxides: TiO2 and TiNb2O7. The investigated Nb-rich alloy formed more TiNb2O7 relative to TiO2 and was found to oxidize more rapidly than the Ti-rich alloy investigated. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
High-Temperature Materials, Characterization, Other |