About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials, Processes and Applications for Energy Industry
|
| Presentation Title |
Improvements in Creep Performance of Modified IN738 Processed with Laser Powder Bed Fusion |
| Author(s) |
Mary Helen Dunbar, Dan McConville, Josh Rouault, Ben Rafferty, Jeremy Iten, Jonah Klemm-Toole |
| On-Site Speaker (Planned) |
Mary Helen Dunbar |
| Abstract Scope |
Many power generation and propulsion applications utilize gamma prime strengthened Ni-based superalloys for hot section components due to their high strength and creep resistance. Unfortunately, many Ni-based superalloys suffer from solidification cracking that limits their use with additive manufacturing, thus preventing the increased component complexity afforded by processes such as laser powder bed fusion. In this work, the creep performance of a modified solidification crack free version of IN738, a gamma prime strengthened Ni-based superalloy that is typically used in cast form, is evaluated at 850 °C and compared to standard IN738 that contains solidification cracks. The modified version of IN738 shows higher creep ductility and longer creep life compared to the standard version of IN738. The performance of the modified version of IN738 is compared to other additively manufactured versions and cast forms in the literature, and future directions for additional improvements in performance are discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Mechanical Properties |