| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
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| Presentation Title |
SPG-54: Tuning the Microstructure in the Direct Energy Deposited Metastable Beta Ti-5Al-5Mo-5V-3Cr Alloy for Aerospace Applications
|
| Author(s) |
Sydney Grace Fields, Dian Li, Deepak Pillai, Yufeng Zheng |
| On-Site Speaker (Planned) |
Sydney Grace Fields |
| Abstract Scope |
Metastable beta titanium alloys are critical lightweight structural materials in aerospace industry due to their excellent comprehensive properties, e.g., high specific strength, excellent toughness, and great corrosion resistance. One advantage of metastable titanium alloys is that the mechanical properties of these alloys can be optimized by tuning the microstructure evolution via different heat treatment. In this work, we used SEM, TEM, 3D FIB-SEM tomography and 3D APT to quantitatively investigate the phase transformation pathways during the post-heat treatment for the direct energy deposited (DEDed) metastable beta Ti-5Al-5V-5Mo-3Cr (wt.%, Ti-5553) alloy. The influence of the aging temperature on the ⍺ microstructure during post-heat treatment was systematically studied. Refined, more-refined, and super-refined ⍺ microstructure with different number densities and hardness values were achieved. The critical roles of nanostructures formed during additive manufacturing on refining the precipitates microstructure in Ti-5553 during post-heat treatment will be introduced. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, Titanium, Mechanical Properties |