| About this Abstract |
| Meeting |
Materials Science & Technology 2019
|
| Symposium
|
Additive Manufacturing: Effective Production, Characterization, and Recycling of Powder Materials
|
| Presentation Title |
Assessment of 316L Stainless Steel Powder Produced from Recycled Machining Chips for Closed Lifecycle Additive-Subtractive Manufacturing |
| Author(s) |
Marcus A. Jackson, Justin D. Morrow, John F. Konopka, Dan Thoma, Frank E. Pfefferkorn |
| On-Site Speaker (Planned) |
Marcus A. Jackson |
| Abstract Scope |
The objective of this work is to compare 316L stainless steel powder produced by ball milling of 316L stainless steel machining chips to traditional melt-atomized powder feedstock. This powder production method is key to enabling closed lifecycle additive-subtractive manufacturing – a vision for sustainable material manufacturing wherein the machining chips produced by subtractive manufacturing are mechanically processed, without melting, into feedstock for additive manufacturing and thus recycled. In this work, a wrought bar of 316L stainless steel is end milled to produce chips, which are ball milled to reduce their size to form a powder. The particle size, morphology, and chemistry of the powder is then assessed by scanning electron microscopy and energy dispersive x-ray spectroscopy and compared with similar assessment of traditional melt-atomized powder feedstock. The feasibility of this method to produce feedstock for a Laser Engineered Net Shaping (LENS) additive manufacturing system is then presented. |
| Proceedings Inclusion? |
Planned: At-meeting proceedings |