About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in the State-of-the-Art of High Temperature Alloys
|
| Presentation Title |
C-4: Design of Additively-Manufactured, Low-solute, Eutectic Nickel-base Alloys for High-Temperature Applications |
| Author(s) |
Clement Ekaputra, Sebastien Dryepondt, Alex Plotkowski, Amit Shyam |
| On-Site Speaker (Planned) |
Clement Ekaputra |
| Abstract Scope |
Towards development of Ni-superalloys suitable for additive manufacturing (AM) with new combinations of structural and functional properties, we investigate low-solute, eutectic Ni-based alloy compositions. We identify binary eutectic Ni-B, -Ce, -La, -Y, and -Zr alloys as candidates based on thermodynamic criteria. We arc-melt the five alloys; all contain >50 vol.% of strengthening intermetallic phases in a γ-Ni matrix. We then investigate the high-temperature properties, including coarsening behavior, oxidation resistance, and tensile properties. We then laser-remelt the arc-melted alloys to examine AM processability. Among the five alloys, the Ni-Zr alloy exhibits the best combination of thermal stability, strength, and processability, though oxidation and ductility require improvement. We atomize and print a hypoeutectic Ni-Ce-Zr alloy; this alloy has comparable creep resistance to IN625 with a fraction of the solute content. This work establishes low-solute eutectic Ni-based alloys as potential new AM materials; future design will further balance mechanical, oxidation, and thermal properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Copper / Nickel / Cobalt, Mechanical Properties, Additive Manufacturing |