| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Recent Advances in Titanium Science and Technology: MPMD/SMD Symposium Honoring Professor Dipankar Banerjee
|
| Presentation Title |
Nanoscale Shuffle Transformation in Metastable Beta Titanium Alloys |
| Author(s) |
Yufeng Zheng, Deepak Pillai, Dong Wang, Rajarshi Banerjee, Yunzhi Wang, Dipankar Banerjee, Hamish Fraser |
| On-Site Speaker (Planned) |
Yufeng Zheng |
| Abstract Scope |
Shuffle transformation involves the rearrangement of atom positions within the unit cell with little or no pure strain of the lattice, belonging to a distinct class of displacive transformation. In this work, we report a nanoscale phase, named as O’ phase, which forms through shuffle mechanism in metastable beta titanium alloys. The structures of O’ phase in various metastable beta titanium alloys including binary Ti-Mo, ternary Ti-Mo-Al and Ti-Nb-Zr and quaternary Ti-Nb-Zr-Ti alloys, were characterized using diffraction contrast transmission electron microscopy and z-contrast aberration-corrected scanning transmission electron microscopy. It has been found that during the rapid quenching from above beta transus temperature to room temperature, the body-centered cubic (bcc) beta phase transforms to orthorhombic O’ phase. This transformation occurs via the shuffle of atoms on alternating {110} planes of bcc lattice along the <1-10> directions. Additionally, the difference and transformation between O’ phase and alpha” phase will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Phase Transformations, Characterization |