About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
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Symposium
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Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
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Presentation Title |
The Development of a Directed Energy Depositon (DED) Printability Framework for Improving Part Density and Performance in High Strength Martensitic Steels |
Author(s) |
Matthew W. Vaughan, Michael Elverud, Jiahui Ye, Raiyan Seede, Sean Gibbons, Philip Flater, Alaa Elwany, Raymundo Arroyave, Ibraham Karaman |
On-Site Speaker (Planned) |
Matthew W. Vaughan |
Abstract Scope |
While the directed energy deposition (DED) technology provides a novel and effective way for producing significant grain refinement (by imposing a rapid cooling rate upon solidification), its inherent complexity merits a need for the development of a DED framework that quickly identifies ideal printability spaces for a given steel, thereby enabling printing of materials to full density. Consequently, achieving optimal strengthening in novel high strength martensitic steels via DED and the Hall-Petch effect can be expedited. To address this need, this study proposes a DED printability framework, where an advanced high strength martensitic steel known as AF9628 is printed to full density, high strength, respectable ductility (ρ > 99%, UTS > 1.2 GPa, εf > 10%). The introduced process optimization framework is easily adaptable to other high-end alloys and should prove useful to the research community in accelerating the adaptability of DED in printing to excellent density and mechanical performance. |