About this Abstract |
Meeting |
2021 AWS Professional Program
|
Symposium
|
2021 AWS Professional Program
|
Presentation Title |
The Investigation of the Dynamic Behaviors of Mixing Molten Pool in the Laser Additive Manufacturing by Numerical Simulation |
Author(s) |
Yuewei Ai, Pengcheng Yuan, Jian Cheng, Yi Huang |
On-Site Speaker (Planned) |
Yuewei Ai |
Abstract Scope |
The innovative approaches for designing lightweight product with load-adapted structures can be achieved by laser additive manufacturing which has been widely used in automotive and aerospace industry. In this paper, a 3D numerical model incorporating the wire feeding, laser absorption and mixing molten pool dynamics is developed to investigate the laser additive manufacturing process. The temperature distribution and molten pool behaviors are analyzed based on the simulation results. The surface of the mixing molten pool during the laser additive manufacturing process has been tracked and the evolution of molten pool is obtained. The process parameter including the laser power, scan speed and wire feeding speed, and the effects of marangoni convection on the surface evolution of molten pool are analyzed by the numerical simulation results. It is found that the molten pool dynamic behaviors have great influence on the formed layer morphology after the solidification of molten metal in the molten pool. The calculated temperature distribution, layer height and width, and molten pool depth are validated by the experimental results and good agreement between them has been obtained. Therefore, the proposed method is effective for improving the molten metal flowing of the molten pool and the geometry of layer shaping in the laser additive manufacturing. |
Proceedings Inclusion? |
Definite: Other |