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 |
Enhancement of Gas-Atomized 304L Stainless Steel Powder by Plasma Spheroidization for use in the Laser Powder Bed Fusion (LPBF) Process |
Author(s) |
M. Hossein Sehhat, Austin T. Sutton, Ming C. Leu |
On-Site Speaker (Planned) |
M. Hossein Sehhat |
Abstract Scope |
Particles of AISI 304L stainless steel powder, produced using the gas-atomization method, were spheroidized by the induction plasma spheroidization process (TekSphero-15 spheroidization system) to assess the effects of plasma spheroidization on powder and part properties. The morphology of both as-received and spheroidized powders was characterized by measuring particle size and shape distribution. The Revolution Powder Analyzer was used to quantify powder flowability. After building several parts with both the as-received and spheroidized powders using the Laser Powder Bed Fusion (LPBF) process, the mechanical properties of parts fabricated with these two kinds of powders were measured and compared. After the plasma spheroidization process, the particles reshaped to spheres while their particle size remained essentially unchanged. The parts fabricated by the LPBF process with the plasma spheroidized powder showed lower tensile strength but higher ductility, which is due to change in the solidification mode after the spheroidization process. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |