| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development II
|
| Presentation Title |
Laser Powder Bed Fusion of a CoNi-base Superalloy for Advanced Components in Extreme Environments |
| Author(s) |
Kira Pusch, Sean Murray, Andrew Polonsky, Chris Torbet, Peeyush Nandwana, Michael Kirka, Ryan Dehoff, Ning Zhou, Stephane Forsik, William Slye, Tresa Pollock |
| On-Site Speaker (Planned) |
Kira Pusch |
| Abstract Scope |
The geometric flexibility afforded by additive manufacturing enables the possibility of complex component designs for advanced materials in extreme environment applications. However, many of the high-performance gamma prime-containing nickel-base superalloys, used for instance in critical components of the hot section of turbine engines, are not easily processed via additive technologies due to their tendency to crack upon solidification. Parts fabricated by laser powder bed fusion (LPBF) are especially prone to cracking due to high thermal gradients and solidification velocities characteristic of the process. Here we present the development of a novel CoNi gamma prime-containing superalloy with inherent oxidation resistance and high gamma prime solvus temperature that is amenable to processing via LPBF. Microstructure development in the as-deposited as well as heat treated state will be discussed, as well as the mechanical properties of these alloys in comparison to other gamma prime-containing superalloys currently under investigation. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |