| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Applications II
|
| Presentation Title |
Numerical Simulation and High-speed Photography Characterization of Powder Delivery During LENS® Additive Manufacturing for Metal Matrix Composites |
| Author(s) |
Sen Jiang, Baolong Zheng, James Haley, Bingqing Chen, Jiayu Liang, Shuai Huang, Enrique J. Lavernia, Julie M Schoenung |
| On-Site Speaker (Planned) |
Sen Jiang |
| Abstract Scope |
Inconel 718 and Inconel 718+TiC MMC were fabricated using Laser Engineered Net Shaping (LENS®). The size and morphology of the feed stock powder, carrier gas flow condition and nozzle geometry can all affect powder delivery behavior. In this work, high-speed photography with 100k frames per second was utilized to observe the particle flight from the nozzle exit to the substrate and interaction with the molten pool. Particle position, flight trajectory and density distribution for both Inconel 718 and TiC powder were obtained. The captured videos revealed distinct particle cloud patterns and particle flow behavior for Inconel 718 and TiC, due to the differences in particle size and morphology. A three-dimensional COMSOL Multiphysics® model was constructed to investigate the gas flow field, particle-gas interactions, particle-particle interactions and particle-wall collisions during LENS® deposition. The calculated particle trajectories and density distributions were validated using the captured high-speed video. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |