| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification Science VIII
|
| Presentation Title |
Quantification of the Extent of Disequilibrium at the Solid-liquid Interface during Additive Manufacturing |
| Author(s) |
Prabhakar Pal, André B Phillion |
| On-Site Speaker (Planned) |
Prabhakar Pal |
| Abstract Scope |
This study reports recent findings to quantify the degree of disequilibrium at the solid-liquid interface in order to characterize if an additively manufacturing process route exhibits rapid solidification. A numerical model capable of predicting cellular and dendritic growth at low and high velocities is used to model the crystal growth during selective laser melting (SLM) process. The developed model accounts for various undercooling, the variation in the partition coefficient, liquidus slope, and diffusion coefficient at high velocities. By comparing the predicted results with the published experimental data, we attempted to quantify the magnitude of various undercooling and identify the non-equilibrium phenomenon necessary to quantitatively predict or qualitatively capture the growth model and cellular/dendritic spacing during the SLM process. |
| Proceedings Inclusion? |
Planned: |