About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Investigating Deviations from NAVSEA LPBF Qual-Cert Requirements on the Microstructure and Mechanical Properties of 316L Stainless Steel Components |
Author(s) |
Keegan Muller, Katherine Fowler, Jennifer Semple, Evan Handler, Shawn Robinson |
On-Site Speaker (Planned) |
Keegan Muller |
Abstract Scope |
Technical data packages developed by NAVSEA for Laser Powder Bed Fusion (LPBF) components currently do not allow manufacturers to alter the qualified build file in any way without requalification due to concern over how small changes can alter the component’s thermal history, microstructure, and mechanical properties. To allow for greater manufacturing flexibility and inform decision-making on proposed build file alterations, common build file changes on LPBF components were investigated through the manufacturing of a representative component and generic test specimens under various test conditions. Common build file alterations to be investigated included the addition of multiple parts to the build plate, mid-production pauses, part location, and the distance between adjacent parts. Characterization of microstructure, tensile properties, and fracture toughness was conducted to quantify the impact of these common build file alterations and establish guidance for future qualification efforts. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |