| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Joining Technologies for Automotive Lightweight Structures
|
| Presentation Title |
Investigation of Metal Mixing in Laser Keyhole Welding of Dissimilar Metals |
| Author(s) |
Wenkang Huang, Wenda Tan |
| On-Site Speaker (Planned) |
Wenkang Huang |
| Abstract Scope |
In this study, the metal mixing process in laser keyhole welding of dissimilar metals was investigated with a combination of experimental and modeling approaches. The parametric experimental study was conducted to reveal the effects of laser power, welding speed, and heat input on the metal mixing in the fusion zone. Ex-situ energy-dispersive X-ray spectroscopy element mapping was used to characterize the metal mixing status in the fusion zone. To investigate the underlying physics of the welding process, a numerical model was developed to simulate the heat transfer, fluid flow, and metal mixing in the molten pool. The numerical results demonstrated that the metal mixing behavior was strongly affected by the recoil pressure, Marangoni force, and molten pool lifetime. The influence of different welding parameters on those factors was studied based on the simulation and experimental results. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Joining, Modeling and Simulation, |