| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Alloy Design: Bridging Fundamental Physical Metallurgy, Advanced Characterization Techniques, and Integrated Computational Materials Engineering for Advanced Materials
|
| Presentation Title |
Oxide Dispersion Strengthened 718 Ni Alloy Fabricated Through Direct Energy Deposition |
| Author(s) |
Emiliano Flores, Benjamin Stegman, Anyu Shang, William Jarosinski, Joseph Corpus, Haiyan Wang, Xinghang Zhang |
| On-Site Speaker (Planned) |
Emiliano Flores |
| Abstract Scope |
Utilizing the process known as direct energy deposition (DED), powder alloys can be tailored to produce complexly designed parts to withstand extreme environments. Oxide dispersion strengthened (ODS) alloys have various applications operating in extreme environments. However, it remains challenging to introduce nanoscale oxide inclusions in additively manufactured (AM) alloys. Here we will present a method to produce ODS alloys in AM 718 nickel-based superalloy by DED. In situ SEM tension studies show that the ODS alloys have better mechanical performance than control 718 Ni alloys from room temperature up to 900° C. The work hardening rates and high temperature deformation mechanisms of the ODS alloy and control alloy are compared. Electron microscopy studies were performed to characterize the microstructures of the AM alloys. Overall, the 718 DED ODS alloy maintained a consistent ductility while providing good mechanical strength. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Other |