About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
High-Throughput Investigation of Phase Transformation in Ti-Fe Alloys |
| Author(s) |
Deepak Pillai, Yufeng Zheng |
| On-Site Speaker (Planned) |
Deepak Pillai |
| Abstract Scope |
B2-based BCC superalloys have gained growing interests for high-temperature applications. The binary Ti-Fe alloy serves as a model candidate to study the formation mechanisms of B2 TiFe intermetallic in the BCC beta solid solution. In this work, we employed the high-throughput fabrication techniques, including direct energy deposition and arc-melting, to investigate the composition-structure-property interrelationship in Ti-Fe alloys. We studied the structural and compositional heterogeneities in the compositionally gradient Ti–Fe samples using TEM and 3D APT. The size, morphology and distribution of nanoscale omega precipitates were analysed. The shuffle transformation mechanism accompanying the omega precipitate formation was examined using aberration-corrected STEM. The structure and composition across the B2/BCC interface is identified using aberration-corrected STEM and 3D APT. The influence of Fe content on the formation of nanoscale omega phase in Ti-Fe alloy will be discussed, offering new insights into phase stability in BCC superalloys. |