About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
Presentation Title |
Examining Composition Effect on Thermal History in Laser Powder Bed Fusion of Alloy 718 |
Author(s) |
Kathryn Jones, Gregory Wong, Anthony Rollett |
On-Site Speaker (Planned) |
Kathryn Jones |
Abstract Scope |
Laser powder bed fusion additive manufacturing allows for tailoring of microstructure and mechanical properties of parts via key process variables. Nickel alloy 718 is a commonly additively manufactured material used in aerospace applications due to its high strength and performance at high homologous temperatures. 718 powder feedstock is variable in terms of composition which can lead to changes in thermophysical properties that affect the aforementioned microstructure which can in turn generate uncertainty in predictions of part performance. To better understand feedstock variability a thermal modeling code, 3DThesis, was used to simulate time temperature histories of single track scans with properties from 100 different compositions of 718 within the allowed ranges. Examining the variability in thermal response as a function of composition allows for determination of uncertainties based on composition that can be fed into digital twin pipelines for the certification of AM parts. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |