About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Size and Processing Parameter Effects in Laser Powder Bed Fusion of Inconel 718 |
Author(s) |
Anna Dunn, Henry D. Young, Joy Gockel |
On-Site Speaker (Planned) |
Anna Dunn |
Abstract Scope |
Processing parameter and part size effects can have a profound effect on microstructure development during laser powder bed fusion (LPBF). We utilized LPBF to fabricate Inconel 718 tensile and fatigue specimens, at varying laser powers and part sizes. We compare mechanical testing (fatigue, tensile, microhardness array) to microstructural data (SEM, EDS, EBSD). Higher laser powers produce larger grains and more Laves phase segregation. Samples with larger diameters exhibit smaller grains. Lower bulk laser power produces fatigue bars with higher cycles to failure, with exceptions for samples with large surface pores or surface notches. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |