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)
|
Presentation Title |
Process Response of Martensitic 250 Stainless Steel Alloy + Wire Arc Additive Manufacturing with Cold Metal Transfer |
Author(s) |
Ryan Stokes, Haley Doude, Linkan Bian, Matthew Priddy |
On-Site Speaker (Planned) |
Ryan Stokes |
Abstract Scope |
The process response of m250 stainless steel alloy is reported on and the relationship of torch travel speed and heat input on the final bead geometry, depth of penetration, and density of the single weld tracks is established. Bead geometry and depth of penetration are critical to achieving proper layer thickness and hatch overlap to achieve maximum density in multi-layer build ups. This work also identifies ideal operating parameters that deliver the lowest heat input, while maintaining optimal bead geometry. The energy input is obtained via weld monitoring and correlated via an IR camera aimed at the depositions and thermocouples placed on the substrate. Once ideal processing parameters are obtained, multi-layer thin walls are constructed to evaluate density and oxide inclusions within the tracks. Using the established relationship between energy input and heat input, target specific interpass temperatures and times that create controlled martensitic transformation of the buildups. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |