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 |
Exploring the Influence of Geometrical Features on Mechanical Property Variation in LPBF Parts Through Simulation |
Author(s) |
Junyan He, Alaa Olleak |
On-Site Speaker (Planned) |
Alaa Olleak |
Abstract Scope |
Qualifying metal parts produced via Laser Powder Bed Fusion (LPBF) poses challenges due to the expense and time of experimental investigations. Parts qualification is crucial in industries like aerospace and biomedical to ensure high reliability and safety standards. Microstructure produced by LPBF process depends on thermal history. In-situ monitoring can capture unexpected process behavior, but handling the resulting data burden delays decision-making and necessitates further experimental iterations.
In this study, simulation-based workflow to estimate cooling rate variability within parts is proposed. Firstly, a part-scale thermal model is developed using Ansys to predict the thermal history at different locations in Inconel 718 cantilevers. Secondly, the mechanical properties variation at different locations are quantified utilizing the EBSD maps from the NIST AMBench2022 dataset along with crystal plasticity models which are performed on microstructure samples to characterize the mechanical properties. Preliminary findings indicate spatial variations in mechanical properties, correlating with predicted thermal histories. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |