| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-77: Nanostructures in the Direct Energy Deposited Metastable Beta Ti-5Al-5Mo-5V-3Cr Alloy |
| Author(s) |
Sydney Grace Fields, Deepak Pillai, Dian Li, Tirthesh Ingale, Vishal Soni, Mohammad Merajul Haque, Yiliang Liao, Rajarshi Banerjee, Yufeng Zheng, Yao Li |
| On-Site Speaker (Planned) |
Sydney Grace Fields |
| Abstract Scope |
Metastable β titanium alloys are essential structural materials for lightweight aircraft, contributing to improved fuel efficiency. The nanostructures in these alloys can significantly influence microstructure evolution and deformation behavior. For example, nanoscale ω precipitates can serve as favorable nucleation sites for α precipitation, leading to a refined α microstructure and enhanced strength. In this work, the nanostructures and their effects on the strength and ductility in the direct energy deposited (DED) Ti-5Al-5V-5Mo-3Cr (wt.%, Ti-5553) alloy were systematically investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and 3D atom probe tomography (APT). The grain structure and texture were analyzed using SEM EBSD technique. The nanoscale structures, including nanoscale ω and O’ phases, were identified using conventional diffraction contrast TEM and 3D APT. The formation mechanism of these nanostructures in DEDed Ti-5553 as well as their impacts on the mechanical properties will be introduced. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Characterization, Titanium |