| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Formation of Easy-to-Remove Support Structures in Metal LPBF with En-situ Powder Bed Doping. |
| Author(s) |
McKay Sperry, David Carter, Nathan Crane, Tracy Nelson |
| On-Site Speaker (Planned) |
Nathan Crane |
| Abstract Scope |
Laser Powder Bed Fusion (LPBF) is a popular Additive Manufacturing (AM) technique used commonly for metals. Metal parts formed by LPBF generally require supports connecting the part to the print bed to hold up the structure, remove heat, and reduce residual stresses. Because of these supports, finished parts must be cut away from the build plate, and generally require additional machining to achieve the desired geometry. In this study, a carbon suspension was deposited in the 316L stainless steel powder bed at the interface between the support and the finished part. This helped the finished part to break free from the supports without any need for machining, simplifying post-processing. The added carbon reduced the corrosion resistance of the 316L, allowing excellent heat transfer and mechanical support during printing, but causing the modified supports to etch preferentially in an electrolyte bath and release the part. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |