About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques
|
Presentation Title |
A-29: In-situ Full-field Mapping of Melt Flow Dynamics in Laser Metal Additive Manufacturing |
Author(s) |
Qilin Guo, Cang Zhao, Minglei Qu, Lianghua Xiong, Luis I. Escano, S. Mohammad H. Hojjatzadeh, Niranjan D. Parab, Kamel Fezzaa, Tao Sun, Lianyi Chen |
On-Site Speaker (Planned) |
Qilin Guo |
Abstract Scope |
Melt flow plays a critical role in laser metal additive manufacturing, yet the melt flow behavior within the melt pool has never been explicitly presented. Here, we report in-situ characterization of melt-flow dynamics in every location of the entire melt pool in laser metal additive manufacturing by populous and uniformly dispersed micro-tracers through in-situ high-resolution synchrotron x-ray imaging. The location-specific flow patterns in different regions of the melt pool are revealed and quantified. The dominating physical processes at different locations in the melt pool are identified. The full-field melt-flow mapping approach reported here opens the way to study the detailed melt-flow dynamics under real additive manufacturing conditions. The results obtained provide crucial insights into laser additive manufacturing processes, and are critical for developing reliable high-fidelity computational models. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |