| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Designing Complex Microstructures through Additive Manufacturing
|
| Presentation Title |
Effect of Laser Melt Schedule on the Microstructure of Additively Manufactured IN718 Alloy |
| Author(s) |
Gyan Shankar Nln, Gerald L. Knapp, John Coleman, Matt Rolchigo, Jay Reynolds, Chris M. Fancher |
| On-Site Speaker (Planned) |
Gyan Shankar Nln |
| Abstract Scope |
Laser powder bed fusion (L-PBF) has enabled the fabrication of intricate and geometrically complex structures that are not achievable using conventional processes. However, these systems face challenges in terms of scalability due to throughput constraints. Laser rotary powder bed fusion (L-RPBF) systems are being investigated as possible solutions to enhance the deposition rates compared to conventional L-PBF. This study investigates the effects of interleaved laser melting in a dual laser L-RPBF system on as-fabricated microstructures. IN718 test coupons were printed using single-laser or dual-laser configurations, with a rotational speed of 1 rpm resulting in melt cycles occurring either every 60 seconds (single laser) or alternately every 30 and 90 seconds (dual-laser), respectively. The interplay of melt schedule and AM process setting were determined by quantifying the variations in the melt pool characteristics and microstructural features such as grain size, shape, and crystallographic orientation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Other, Other |