| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Shuffle Transformation in Titanium Alloys |
| Author(s) |
Wenrui Zhao, Dian Li, Yufeng Zheng |
| On-Site Speaker (Planned) |
Yufeng Zheng |
| Abstract Scope |
Shuffle transformation is a distinct class of displacive transformation, accomplished by the rearrangement of atom positions within the unit cell, with little or no pure strain of the lattice. In titanium alloys, body-centered cubic (bcc) beta phase to hexagonal omega phase transformation is a prototype shuffle transformation, in which every two of three adjacent {111} planes shuffle towards to the intermediate plane of the two leaving the third plane unaltered. In this work, we report another shuffle transformation in titanium alloys, the bcc beta phase to orthorhombic O’ phase transformation. The structure of O’ phase was directly characterized using atomic resolution aberration-corrected scanning transmission electron microscopy. The orthorhombic structure is generated by the shuffle of every other {110} planes of bcc lattice along the <1-10> directions. This work is supported by the Research Enhancement Grant from University of Nevada Reno. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Titanium, Characterization |