About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
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Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
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Presentation Title |
Characterizing the Effects of Laser Power, Scanning Velocity, and Deposition Temperature on Inconel 718 Single-track Melt Pool Geometry in Laser Powder Bed Fusion |
Author(s) |
William J. Frieden Templeton, Seth Strayer, Shawn Hinnebusch, Albert To, Sneha Prabha Narra |
On-Site Speaker (Planned) |
William J. Frieden Templeton |
Abstract Scope |
The quality of laser powder bed fusion (L-PBF) additively manufactured (AM) parts is inherently tied to melt pool characteristics during production. Suboptimal melt pool characteristics lead to porosity and decreased strength in AM parts compared to legacy manufacturing methods. Suboptimal melt pool characteristics are avoided using currently available process windows that guide laser power and velocity selection to avoid the development of defects such as keyhole porosity or lack-of-fusion. In addition to the power and velocity, this study characterizes the impact of deposition temperature on the geometry of single-track Inconel 718 melt pools. This experimental characterization work results in process windows to avoid undesirable melt pool characteristics resulting from heat build-up during fabrication of complex geometries. |