| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Solidification in External Fields
|
| Presentation Title |
Influence of Static Magnetic Field on the Solidification of Inconel 718 Alloys during Additive Manufacturing |
| Author(s) |
Dafan Du, Anping Dong, Baode Sun |
| On-Site Speaker (Planned) |
Dafan Du |
| Abstract Scope |
Owing to its high accuracy and good design flexibility, the application of additive manufacturing (AM) to Ni-based superalloy parts has been rapidly increasing. However, the parts fabricated using AM exhibit cracks, pores and rough texture, which severely hinders the development of this technology. In this study, Inconel 718 alloys were fabricated with Laser powder bed fusion (LPBF) and Laser direct energy deposition (LDED) under static magnetic field (SMF) of up to 0.2 T. The experimental results showed that the samples performed a higher density with SMF than the samples fabricated without SMF. Results show that the SMF refined the grain size for LPBFed samples; however, the SMF coarsen the grain size for LDEDed samples. Simulation results suggest that at the melt pool scale, the depression zone depth increases with increasing SMF intensity, and the correspondingly increased laser absorptivity is the main reason for the decrease in the lack-of-fusion defects. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Solidification, Other |