| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Microstructural and Mechanical Long-term Stability of AM Materials
|
| Presentation Title |
Microstructure evolution and Mechanical Properties of Ti6Al4V Processed Below β-Transus Temperature using Additive Friction Stir Deposition |
| Author(s) |
Meet Gor, Daniel Fabijanic, Pinaki Prasad Bhattacharjee |
| On-Site Speaker (Planned) |
Meet Gor |
| Abstract Scope |
Additive Friction Stir Deposition (AFSD) is a solid-state additive manufacturing technique that produces dense parts with fine equiaxed microstructures, thereby enhancing the mechanical properties of processed alloys. This study presents the first demonstration of processing Ti6Al4V below the β-transus temperature (986°C) using a closed-loop temperature-controlled AFSD system. Processing below the β-transus temperature induces dynamic recrystallization within the α + β phase region, resulting in a fine equiaxed α structure with an average grain size of 3–4 μm. This contrasts with previous studies where processing above the β-transus temperature produced fine α laths within prior β grain boundaries. This study also investigates variations in microstructure and mechanical properties along the build direction. Additionally, it examines the effects of processing temperatures on the microstructural evolution of AFSD-processed Ti-6Al-4V, demonstrating the potential to achieve a fine equiaxed structure in the as-deposited condition. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Characterization |