About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture
|
| Presentation Title |
The Effects of Microalloying on the High-Temperature Creep and Fracture Properties of AM Ni-Based Superalloys |
| Author(s) |
Theophil Jonathan Oros, Andrea Maria Hodge |
| On-Site Speaker (Planned) |
Theophil Jonathan Oros |
| Abstract Scope |
Additive manufacturing (AM) of Ni-based superalloys offers significant benefits and expanded design flexibility. However, these alloys often show reduced high-temperature creep performance compared to their conventionally manufactured (CM) counterparts. This reduction in performance is often attributed to differences in microstructure and impurities introduced during AM processes, which can lead to brittle fracture behavior rather than the ductile fracture typically seen in CM Ni superalloys. Although microalloying has been successfully used to inhibit impurity effects in CM alloys, its application in AM materials has not been widely studied. This work investigates how trace additions of impurity-scavenging elements (e.g., Zr, Hf, Mg, Ca) affect high-temperature creep performance in AM Ni-based superalloys, offering insight into microalloying strategies to enhance mechanical properties in demanding environments. The relationships between composition, microstructure, and fracture behavior will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, High-Temperature Materials |