| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A-141: Process Plateaus, Not Peaks, in Laser-powder Bed Fusion |
| Author(s) |
Bradley Howell Jared, Josh Koepke, Jarrett Tigges, Michael Heiden, David Saiz |
| On-Site Speaker (Planned) |
Michael Heiden |
| Abstract Scope |
Metal laser-powder bed fusion (L-PBF) involves numerous process inputs which must be established to insure the reliable fabrication of part material and geometry. Work has been performed on 316L stainless steel to quantify its parameter space relative to laser power and laser scan velocity. Multiple performance metrics were evaluated including surface roughness, geometrical form error, material density, microstructure and mechanical properties. It has been discovered that the process space for L-PBF 316L involves a viable process window that is much more of a plateau area than an optimized peak. It has also been determined that establishing process settings based solely on material density, a common practice in the industry, is likely not truly optimal. These results, and their potential impact on part performance will be discussed. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |