About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Laser-Powder Bed Fusion Processing Effects on Microstructural Texture in Nickel Superalloy |
Author(s) |
Frank M. Brinkley, McKay Sperry, Patxi Fernandez-Zelaia, Christopher Ledford, Michael Kirka |
On-Site Speaker (Planned) |
Frank M. Brinkley |
Abstract Scope |
Nickel superalloys are extensively used in aerospace and other applications requiring high temperature oxidation resistance and creep performance. Additive manufacturing processes such as laser powder bed fusion (L-PBF) offer unique capabilities to control the microstructure of nickel superalloys such as Inconel 625 (IN625). By varying the laser power, laser speed, and hatch spacing of the scan paths, the microstructure can be varied from equiaxed to elongated grains. This microstructural variation has been shown previously to be primarily driven by the solidification front dictated by the melt pool geometry and heat flow direction. Because component microstructure directly impacts the mechanical response, controllable microstructure can enable tailored mechanical properties based on component application. A methodology for varying crystallographic texture in IN625 produced via L-PBF by varying process parameters is demonstrated. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |