About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Special Session
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Presentation Title |
Effect of Composition and Phase Diagram Features on Printability and Microstructure in Laser Powder Bed Fusion: Development and Comparison of Processing Maps Across Alloy Systems |
Author(s) |
Raiyan Seede, Jiahui Ye, Austin Whitt, William Trehern, Alaa Elwany, Raymoundo Arroyave, Ibrahim Karaman |
On-Site Speaker (Planned) |
Raiyan Seede |
Abstract Scope |
Additive manufacturing (AM) has gained considerable interest due to its ability to produce parts with complex geometries with the potential for local microstructural control. However, there is a fundamental gap in understanding how changes in process variables and alloy composition affect additively manufactured parts. This systematic study sheds light on the effects of alloying composition and corresponding phase diagram features on the printability and solidification microstructures of four binary nickel-based alloys representing isomorphous, weak solute partitioning, strong solute partitioning, and eutectic alloying conditions. A simple framework for developing processing maps detailing porosity and microsegregation across the laser power – scan speed parameter space is established and validated for each of these alloys to determine how material properties affect printability and microstructure in L-PBF. This knowledge is vital in optimizing alloy chemistry and process parameters to design alloys specifically for additive manufacturing and will provide a path toward local microstructure control. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |