| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Fabrication of Ti6Al4V Spherical Powders for Additive Manufacturing from Recycled Shavings |
| Author(s) |
Zeynep Ege Uysal, Sertaç Altınok, Yunus Eren Kalay, Tayfur Öztürk |
| On-Site Speaker (Planned) |
Zeynep Ege Uysal |
| Abstract Scope |
Ti6Al4V alloy, widely used in aerospace and biomedical industries for its high strength-to-weight ratio, corrosion resistance, and processability, faces significant challenges in traditional manufacturing. Approximately 70-80% of the alloy is lost as scrap, necessitating costly recycling through high-temperature melting processes. Moreover, the alloy's low thermal conductivity and high affinity for oxygen hinder the maintenance of chemical purity during recycling through melting. This study investigates the cost effective hydrogenation-dehydrogenation (HDH) method, a melting-free process, to convert Ti6Al4V shavings into AM-grade powder. The HDH process involves hydrogen absorption into the metal lattice to form brittle titanium hydride, enabling material modification without altering the alloy's composition, followed by hydrogen desorption. Thermal plasma spheroidization subsequently yields fine spherical powders suitable for Powder Bed Fusion (PBF) in AM applications. By integrating hydrogen into the recycling process, particle size is reduced by 58%, and ball-milling time is decreased by 98% compared to hydrogen-free powder production methods. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Powder Materials, Additive Manufacturing |