| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Sustainable Reconditioning of Stainless-Steel Powder via Disk Milling |
| Author(s) |
Zachary Lyon, Gerardo Gamboa, Narendra B. Dahotre, Marcus L. Young, Sameehan S. Joshi |
| On-Site Speaker (Planned) |
Zachary Lyon |
| Abstract Scope |
Reuse of metal powders in additive manufacturing is a common practice that saves time, energy, and costs, while also reducing the environmental impact; however, the powder begins to degrade after several uses from oxidation, agglomeration, and loss of fine particles. Powder reconditioning methods such as plasma spheroidization are expensive and energy intensive decreasing the benefits of powder reuse. To mitigate this problem, the reconditioning of metal powder via disk milling, a much cheaper and energy efficient method, was examined. The powder size distribution, packed density, chemistry, microstructure, and flowability of heavily reused stainless-steel powder was investigated as a function of milling time and frequency. Powder sizes suitable for laser powder bed fusion and directed energy deposition were sieved from the milled powder and used in proof-of-concept builds employing these methods. The samples prepared using milled reused powders were compared with samples fabricated using virgin powders for microstructures and mechanical response. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Recycling and Secondary Recovery, Powder Materials |