About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
2025 Graduate Student Poster Contest
|
| Presentation Title |
SPG-4: Microstructure and Mechanical Properties of Direct Energy Deposited Metastable Beta Ti-5Al-5Mo-5V-3Cr Alloy After Post-heat Treatment |
| Author(s) |
Sydney Grace Fields, Deepak Pillai, Dian Li, Yiliang Liao, Rajarshi Banerjee, Yufeng Zheng |
| On-Site Speaker (Planned) |
Sydney Grace Fields |
| Abstract Scope |
Metastable beta titanium alloys are critical structural materials for lightweight aerospace applications contributing to improved fuel efficiency. Additive manufacturing (AM) becomes a promising technique to produce near-net-shape metastable beta titanium components at reduced costs. Their microstructure and corresponding mechanical properties can be optimized via post-heat treatment. In this work, we studied the microstructure-property relationship in a direct energy deposited (DED) metastable beta Ti-5Al-5Mo-5V-3Cr (Ti-5553) alloy after different heat treatments. Micro- and nanoscale structures were analyzed using SEM, TEM and APT. The roles of heating rates and aging temperatures were quantitatively evaluated using SEM and MIPAR. Room-temperature tensile testing was performed to assess the strength and ductility changes after heat treatments. The impact of the nanostructures formed during DED process, along with their roles in phase transformation and mechanical response in Ti-5553, will be introduced. |