About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
Impact of Zirconia Slurry Doping on 316L Stainless Steel prepared by Laser Powder Bed Fusion for biological/high corrosion applications |
Author(s) |
McKay Sperry, Jakob Bates, Taylor Davis, Tracy W Nelson, Nathan B Crane |
On-Site Speaker (Planned) |
McKay Sperry |
Abstract Scope |
Laser Powder Bed Fusion (LPBF) is a versatile additive manufacturing (AM) technique. Steel is an important material for AM because its many forms can take on a wide variety of properties. This paper presents the process development and results of depositing small quantities of Zirconium Dioxide (zirconia) nanoparticles in a stainless steel (316L) powder bed en-situ prior to fusion in the LPBF process. The process may be adapted to selectively dope a powder bed to form parts with different properties in different areas. Analysis of line tracks and multi-layer parts shows that the added zirconia is not uniformly dispersed, but the majority agglomerates in porous regions within the fused part. The deposition of zirconia limits the anisotropic crystal growth that is characteristic in many metal AM processes. A similar procedure applied with dopant materials that are soluble in the melt pool is recommended modify the properties of finished steel parts. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |