| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Designing Complex Microstructures through Additive Manufacturing
|
| Presentation Title |
Laser Powder Bed Fusion of In718/GRCop-42 Bimetallic Structures: Effect of Deposition Order and Process Parameters |
| Author(s) |
Alasdair Bulloch, Andy Harris, Allin Groom, Amanda Cruchley, Chris Tuck, Richard Hague, Marco Simonelli |
| On-Site Speaker (Planned) |
Alasdair Bulloch |
| Abstract Scope |
The aerospace industry has investigated using additive manufacturing to create functional bimetallic structures. This includes combining the conductive properties of GRCop-42 with the structural and oxidation resistant properties of In718. This talk presents the findings of the interface which forms between In718 and GRCop-42 using a laser powder bed fusion machine equipped with a Schaeffler Aerosint selective powder deposition recoater. Lack of fusion defects form when depositing In718 onto GRCop-42, which can be eliminated through an increase in laser power. Whereas deposition of GRCop-42 onto In718 results in remelting of the In718 and significant levels of Ni, Fe, and Cr flow into the deposited GRCop-42 region. This leads to the formation of new phases at the interface and a local change in grain morphology. These results highlight the importance of considering the deposition sequence during the design phase as it impacts both the integrity and microstructure of the interface. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Copper / Nickel / Cobalt, Other |