| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advancing Current and State-of-the-Art Application of Ni- and Co-based Superalloys
|
| Presentation Title |
Microstructure and Mechanical Properties of a CoNi-base Superalloy Fabricated by Electron Beam Melting |
| Author(s) |
Sean P. Murray, Kira Pusch, Andrew Polonsky, Chris Torbet, Peeyush Nandwana, Michael Kirka, Ryan Dehoff, Ning Zhou, Stéphane Forsik, William Slye, Tresa Pollock |
| On-Site Speaker (Planned) |
Sean P. Murray |
| Abstract Scope |
Electron beam melting (EBM) for additive manufacturing offers the possibility of advanced component designs using materials for extreme environments. This process can be thought of as a repetitive micro-welding process, where metallic powders are sintered and joined layer-by-layer under vacuum by an electron beam. Many of the advanced nickel superalloys used in critical areas of the hot section of turbine engines are traditionally considered unweldable due to their tendency to crack upon solidification, which is promoted by their high volume fraction of gamma prime that forms shortly after solidification. Here we present the development of a novel CoNi-base superalloy with high gamma prime volume fraction and inherent oxidation resistance that is amenable to the EBM processing route. Microstructure development in the as-printed and heat-treated conditions will be discussed, as well as the mechanical properties in comparison to other gamma prime containing superalloys currently being considered. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |