| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Experimental and Computational Study of Area Printing™ Additive Manufacturing: Inconel 718 and M300 Maraging Steel Density Improvement |
| Author(s) |
Ben Fotovvati, Subin Shrestha, Nicholas Ferreri, Ning Duanmu |
| On-Site Speaker (Planned) |
Ben Fotovvati |
| Abstract Scope |
The low manufacturing speed of laser-powder bed fusion (LPBF) additive manufacturing has hindered its adoption in conventional manufacturing methods. Large-area pulsed laser powder bed fusion (LAPBF), also known as “Area Printing”, has addressed this limitation by replacing the point laser with a large-area pulsed laser. Each pulse melts a region of the powder bed on the order of square millimeters, which enables shorter manufacturing time and lower final production costs in addition to higher quality parts due to the lack of spatter compared to conventional LPBF methods. In this study, process parameters are optimized to achieve near full-density parts, and a computational model is developed to understand the multi-physics governing the process. It is observed that the shallow depth and large aspect ratio of the melt pool lead to a unidirectional solidification front extending along the build direction where grains grow epitaxially, and highly directional microstructures are created. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |