|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Applications of Solidification Fundamentals
||In-situ X-ray Imaging of Melt Flow Dynamics in Laser Metal Additive Manufacturing
||Qilin Guo, Cang Zhao, Minglei Qu, Lianghua Xiong, S. Mohammad H. Hojjatzadeh, Luis I. Escano, Niranjan D. Parab, Kamel Fezzaa, Tao Sun, Lianyi Chen
|On-Site Speaker (Planned)
Melt flow plays a critical role in laser metal additive manufacturing, yet it is very challenging to characterize the melt flow behavior due to its opacity to most characterization techniques. Here, we use in-situ synchrotron X-ray imaging to characterization melt-flow dynamics during laser metal additive manufacturing by populous and uniformly dispersed micro-tracers. We revealed and quantified the location-specific flow patterns within the entire melt pool under different melting modes. The physical processes at different locations in the melt pool were discussed. This work opens the gate 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.