Abstract
Laser powder-bed fusion (L-PBF) is promising for manufacturing of lightweight cellular structures. A thin wall is the key element of such structures. Heat and mass transfer in the melt pool formed on the top of a thin wall is essentially two-dimensional. That is why L-PBF process parameters adapted for thin walls strongly differ from those necessary for bulk material. In the present work, a high speed camera records a side view of the melt pool formed on the top of a thin metallic wall due to a laser beam scanning along the wall edge. The melt pool profile and the position of the keyhole are observed. The results are compared with a two-dimensional model of coupled heat conduction and Marangoni convection in the laser-interaction zone. In the studied conditions, the best agreement between the experiment and the modeling implies that a keyhole is formed with the depth comparable with that of the melt pool.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
