About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder-Based Manufacturing and Repair of Large Structural Components for Critical Applications
|
| Presentation Title |
Fabrication of Homogenized and Directionally Solidified Inconel 718 Deposit by Induction-Heating-Assisted L-DED Process |
| Author(s) |
Yeongcheol Shin, Jaeheon Lee, Sangbyuk Lee, Seung Hwan Lee |
| On-Site Speaker (Planned) |
Yeongcheol Shin |
| Abstract Scope |
Powder-based laser-directed energy deposition (LDED) for repairing metallic components leads to microstructural differences between the repaired material and the base material. To overcome this microstructural inconsistency, the present study demonstrates the effectiveness of induction-heating-assisted LDED (IH-A LDED) in fabricating homogenized and directionally solidified Inconel 718 deposit. In the IH-A L-DED, the temperature of the deposit is maintained at 1100℃ to perform the in-situ homogenization heat treatment. Additionally, to promote directionally solidified columnar grain growth, a cooling plate was placed under the substrate to induce heat flux along the building direction. To evaluate the performance of IH-A L-DED, the scanning electron microscopy (SEM) and the electron backscatter diffraction (EBSD) analyses were conducted on the deposits fabricated with and without induction heating. Furthermore, creep testing was conducted on both the IH-A LDED and conventional LDED deposits to investigate the correlation between microstructure and creep properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Copper / Nickel / Cobalt, Mechanical Properties |