| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
2022 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-28: Microstructure and Mechanical Properties of Eutectic Ni-Ce and Ni-Ce-Al Alloys |
| Author(s) |
Syeda Bushra Haider, Elizabeth L. Heon, Eric A. Lass |
| On-Site Speaker (Planned) |
Syeda Bushra Haider |
| Abstract Scope |
Ni-based superalloys are used in high temperature applications for their excellent strength and corrosion resistance in such environments. However, these alloys suffer from poor manufacturability, particularly in terms of casting and solidification processing. Recently, researchers have developed eutectic aluminum-cerium alloys with good castability and high temperature properties. While the Ni-Ce system displays a similar eutectic, no study has yet examined Ni-Ce alloys as a possible high temperature material. In this study, novel Ni-Ce binary and Ni-Ce-Al ternary alloys are produced and characterized. The microstructural evolution of Ni-Ce-Al shows promising stability after extended annealing at elevated temperatures. Electron microscopy on as-cast ternaries shows interesting segregation behavior inside the Ni-rich dendritic regions, while the heat-treated material exhibits γ’ precipitation. The high temperature properties are investigated through hot hardness test and compared with commercially available Inconel-718. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
High-Temperature Materials, Mechanical Properties, Copper / Nickel / Cobalt |