About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
Presentation Title |
Simplifying Post-Processing of Copper Alloys Using |
Author(s) |
Owen Hildreth, Sanaz Yazdanparast |
On-Site Speaker (Planned) |
Owen Hildreth |
Abstract Scope |
Over the last few years, our group has developed novel methods to remove support structures, improve surface finish, and remove trapped powder from metal components fabricated using Powder Bed Fusion (PBF) and Directed Energy Deposition (DED) technologies. This presentation details new new chemistries that bring self-terminating etching to copper alloys (copper, GRCop-42 and GRCop-84) to reducing processing costs and expand design freedoms. Impact of temperature and time were studied and surface roughnesses of Ra ≤ 2 µm are measured after support removal.
This technology expands the capabilities of metals AM by simplifying post-processing. For example, the ability to remove internal supports and trapped powder enable metals Additive Manufacturing (AM) to fabricate complex propulsion systems with improved performance; components with complex internal passages (heat exchangers, propulsion systems); and thin walls structures. The ability to smoother exterior and interior surfaces is expected to improve mechanical performance and increase component lifetime. |