About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Investigating the mechanical performance and microstructural evolution of functionally graded (FG) and non-functionally graded (NFG) titanium alloys produced through Field-Assisted Sintering Technology (FAST). |
| Author(s) |
Joseph Hopkinson |
| On-Site Speaker (Planned) |
Joseph Hopkinson |
| Abstract Scope |
Investigation of the mechanical performance and microstructural evolution of FG and NFG diffusion bonds formed between two titanium alloys during the FAST process. Billets with NFG and FG regions, composed of Ti-64 and Ti-6246, or Ti-6242 and Ti-6246, were consolidated at 900°C, 965°C, or 1100°C. Three tensile specimens were machined for each condition and tested until failure. FG samples generally outperformed NFG samples in UTS and elongation. The 900°C dwell temperature was superior to higher temperatures for both NFG and FG conditions. Fractography revealed predominantly ductile failure modes. NFG samples failed in the weaker alloy, while FG conditions failed towards the central FG region. Microstructural analysis showed full consolidation of the powder for all samples. NFG conditions showed a gradually more diffuse bond with increased temperature, while FG conditions exhibited a mixed composite microstructure at lower temperatures, which gradually became more homogeneous with increasing processing temperature. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Process Technology, Powder Materials |