| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Spatially Tailored Materials: Processing-Structure-Properties
|
| Presentation Title |
Multi-material PBF-LB additive manufacturing of aluminum and copper combinations |
| Author(s) |
Sven Gründer, Florian Hengsbach, Mirko Schaper |
| On-Site Speaker (Planned) |
Sven Gründer |
| Abstract Scope |
Recently, various multi-material PBF-LB printers were developed, allowing the manufacturing of highly complex components possessing locally tailored mechanical, electrical, thermal, or magnetic properties. A highly interesting multi-material combination is copper and aluminum due to the high electrical and thermal conductivity of copper as well as the comparable low density of aluminum. However, the metallurgical joining of Al-Cu multi-materials is highly challenging using PBF-LB since brittle intermetallic phases precipitate at the transition zone of both constituents, leading to significant embrittlement. Moreover, high thermal stresses occur at the interface that can result in undesired cracking.
Thus, in this study, (1) PBF-LB process parameter modifications are tested to reduce the heat input and thermal stresses at the interface. Additionally, (2) CALPHAD-assisted alloy modifications are presented and experimentally validated to enhance the joinability of aluminum copper multi-materials. The multi-material transition zones are microstructurally and mechanically characterized to demonstrate the findings. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Joining, Copper / Nickel / Cobalt, |