| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
An Atoms to Autos Approach for Materials Innovations for Lightweighting: An LMD Symposium in Honor of Anil K. Sachdev
|
| Presentation Title |
Modeling and Validating Hydrogen Porosity Formation in Aluminum Laser Welding |
| Author(s) |
Nicole Trometer, Michael Moodispaw, Wayne Cai, Teresa J Rinker, Shardul Kamat, Zachary Velasco, Alan A Luo |
| On-Site Speaker (Planned) |
Nicole Trometer |
| Abstract Scope |
Laser welding is commonly used to weld commercially pure aluminum foils for battery applications in the automotive industry. Due to the high temperature during laser welding and oxide films on anodized aluminum, hydrogen can be found in the liquid aluminum. This hydrogen will become supersaturated and form gas porosity in the weld upon solidification. The hydrogen supersaturation and porosity formation were modeled using a three-dimensional cellular automaton (CA) method. The effect of different hydrogen concentrations on the formation of gas porosity was studied. The porosity formation and growth were coupled with the welding grain structure in CA modeling. The model was validated with microstructure analysis using scanning electron microscope, LECO analysis of hydrogen content, and microcomputed tomography techniques. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Modeling and Simulation, Joining |