| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Discovery and Insertion of Next Generation Structural Materials
|
| Presentation Title |
A Diffusion Couple Approach to β-Ti Alloy Development: Evaluating the Oxidation Performance of Ti-Fe-X+ Alloys |
| Author(s) |
Paraic O'Kelly, Alexander Knowles |
| On-Site Speaker (Planned) |
Paraic O'Kelly |
| Abstract Scope |
Materials discovery has greatly benefited from ICME utilising thermodynamic databases, however the predictive capability of ICME can be poor when extrapolating to new materials systems away from current understanding, precisely where the largest potential innovations may lie. Recently in the Ti-Fe system, ordered-bcc precipitate-reinforced refractory-metal-based alloys has demonstrated the possibility of β –β’ bcc-superalloys as a new class of high temperature materials. However, the introduction of scale-forming elements is required. The current research applies a diffusion couple approach to generate compositional and microstructural gradients in the Ti-Fe-Al-Cr composition space. As such, the oxidation characteristics of the graded alloy are assessed which offers key insights into composition-microstructure-property relations and a move away from the iterative ingot-by-ingot approach. The experimental results enable a significant down selection of promising discrete quaternary alloys for further study to optimise chemistry, microstructure, environmental and mechanical response. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Titanium, Characterization |