About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Processing of Materials
|
| Presentation Title |
Spheroidal Ti-powder preparation by energy-frugal up-converting of machining scrap secondary feedstock |
| Author(s) |
Mahboobeh Rezaei, Jorg Michael Wiezorek, M. Ravi Shankar, James Perozzi |
| On-Site Speaker (Planned) |
Mahboobeh Rezaei |
| Abstract Scope |
Abstract:
In this study, an energy-efficient method for producing spherical Ti-6Al-4V powders from machining scrap is presented. By leveraging the small-scale dimensions and refined microstructure of machining chips, hydrogenation is achieved at room temperature without external thermal inputs through mechano-chemical attrition (MCA). The hydrogenation process is carried out under an inert gas environment (Argon/Hydrogen) and by reactive ball-milling to achieve controlled hydride and powder formation at low temperature with minimal oxygen contamination. Characterization techniques including scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and laser Induced breakdown spectroscopy (LIBS) were used to investigate particle morphology, the structure, composition, and oxygen concentration analysis. The blocky powders produced are then converted into spherical Ti-6Al-4V powders using a plasma processing platform. This approach presents a low-energy, cost-effective pathway for producing Ti-alloy powders for additive manufacturing (AM) and powder metallurgy (PM) from machining chip scrap of titanium alloy. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, Recycling and Secondary Recovery, Titanium |