| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
The Effect of Fe on the Nanoscale Inhomogeneities in Ti-Fe Alloy |
| Author(s) |
Deepak V. Pillai, Sydney Fields, Merbin John, Yufeng Zheng |
| On-Site Speaker (Planned) |
Deepak V. Pillai |
| Abstract Scope |
Metastable beta titanium alloys are considered prime candidates for structural applications in the aerospace industry, owing to their high strength and exceptional strength-ductility synergy. This study employs advanced characterization techniques, including transmission electron microscopy (TEM) and atom probe tomography (APT), to investigate the structural and compositional heterogeneities in nanoscale omega precipitates in binary as-cast and aged Ti–Fe alloys. The size, morphology and distribution of athermal and isothermal omega precipitates were characterized using TEM selected area diffraction patterns (SADP), and dark field images in as-cast and aged samples respectively. The shuffle transformation mechanism accompanying the omega precipitate formation was investigated using high-angle annular dark-field- scanning transmission electron microscopy (HAADF- STEM) imaging. Additionally, the compositional heterogeneity driving the transformation from athermal omega to isothermal omega was characterized using 3D APT. The influence of Fe content on the formation of nanoscale omega phase in Ti-Fe alloy will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Characterization, Phase Transformations |