|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Titanium Technology
||Characterization of Nanoscale Metastable Phases in a TRIP Titanium Alloy
||Wenrui Zhao, Dian Li, Yufeng Zheng
|On-Site Speaker (Planned)
Transformation-induced plasticity (TRIP) titanium alloys have been recently designed to achieve synergetic high strength and great ductility. In these TRIP titanium alloys, various nanoscale metastable phases have been characterized including hexagonal omega phase and orthorhombic O’ phase, which may play an important role in determining the mechanical performance of these alloys. In this work, nanoscale metastable phases in a TRIP Ti-23Nb-0.7Ta-2Zr-1.2O (at.%) alloy were studied using scanning electron microscopy, transmission electron microscopy, and aberration-corrected scanning electron microscopy. The structure of nanoscale omega phase and O’ phase particles were observed using atomic resolution high angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) imaging. Different atom shuffle mechanisms to form omega phase and O’ phase will be introduced. This work is funded by the Research Enhancement Grant from University of Nevada Reno.
||Titanium, Characterization, Phase Transformations