About this Abstract |
Meeting |
2nd International Conference on Technological Innovations in Metals Engineering (TIME)
|
Symposium
|
Technological Innovations in Metals Engineering (TIME)
|
Presentation Title |
Optimization of Parameters for the Additive Manufacturing of GRCop |
Author(s) |
David S. Scannapieco, David L. Ellis, John J. Lewandowski |
On-Site Speaker (Planned) |
David S. Scannapieco |
Abstract Scope |
Additive manufacturing (AM) is of interest for the space industry to remodel various systems for improved efficiency given higher design freedom. Laser-based AM techniques (LBAM) are ideal for larger components due to their rapid deposition rate and less demanding environmental requirements. GRCop, a Cu-Cr-Nb alloy used in propulsion systems, has high thermal conductivity and high reflectivity making it a challenging material to manufacture with LBAM. The high conductivity of copper requires higher power inputs to maintain an adequate melt pool. Similarly, the high reflectivity of solid copper reduces the thermal efficiency of the LBAM. However, reflectivity is significantly lower in liquid copper, resulting in rapid absorption of energy and porosity formation by metal vaporization. This work explores the optimization of LBAM parameters despite these contradictions. The study will identify an acceptable processing window for the fabrication of GRCop components through the combination of LBAM and a novel alloying technique. |
Proceedings Inclusion? |
Undecided |