| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Use of Field Assisted Sintering Technology (FAST) for the Manufacture of a Metallic Ultra-High Temperature Materials System |
| Author(s) |
Matthew Angelo Gelmetti |
| On-Site Speaker (Planned) |
Matthew Angelo Gelmetti |
| Abstract Scope |
Due to their excellent high-temperature mechanical properties, Niobium silicide-based alloys can replace nickel-based superalloys as the turbine blade material. However, these alloys will need to be coated to improve oxidation resistance. Powder metallurgy has been shown to yield finer and more homogeneous microstructures than as-cast variants. This project explores the use of FAST to produce niobium silicide-based alloys and coatings. The properties and compatibility between alloys will be assessed to develop a materials system with high-temperature mechanical properties and oxidation resistance. Two alloys were selected: EG3 (49.5Nb-18Ti-22Si-6Mo-1.5Cr-2Sn-1Hf) and MG7 (13Nb-24Ti-24Si-35Al-4Hf) to serve as the substrate and bond coat, respectively. The alloys were analysed using Scanning Electron Microscopy (SEM-EDS), X-ray Diffraction (XRD) and Electron backscattered diffraction (EBSD). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, High-Temperature Materials, Powder Materials |