| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Microstructural and Mechanical Long-term Stability of AM Materials
|
| Presentation Title |
Minimizing Directional Anisotropy Through Point Melt Scanning Strategies for IN718 Bulk Parts- Fabricated Via EB-PBF |
| Author(s) |
Shadman Tahsin Nabil, Cristian Banuelos, Michael Edward Madigan, Sammy Tin, Gael Fierro, Ryan B Wicker, Francisco Medina |
| On-Site Speaker (Planned) |
Shadman Tahsin Nabil |
| Abstract Scope |
Metal Additive Manufacturing (AM) has shown significant potential in the aerospace and defense industries. IN718 is a widely popular superalloy – used for aerospace and defense applications. Additively manufactured IN718 parts are prone to directional solidification, resulting in anisotropy and strength variation. Research suggests that novel scanning strategies can mitigate this by restricting the directional solidification part and controlling temperature gradient. Electron Beam powder bed fusion (EB-PBF) is a hot-working process that allows metal printing at elevated temperatures- and can offer a solution. In this study, 15x15x10mm cuboids were built using an EB-PBF machine with different scanning strategies. The results demonstrated microstructure variations, indicating a reduction in anisotropy as measured by the mean aspect ratio. Hardness values corresponded to the observed microstructures, suggesting the possibility of microstructural control through optimized scanning strategies during part fabrication. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Copper / Nickel / Cobalt |