Impact of Scanning Strategy on Residual Stresses in 3D Printed Alloy 718
Author Information
Author(s): Hassila Carl-Johan, Malmelöv Andreas, Andersson Carl, Hektor Johan, Fisk Martin, Lundbäck Andreas, Wiklund Urban
Primary Institution: Applied Materials Science, Uppsala University, Sweden
Hypothesis
How do different scanning strategies affect the residual stresses in laser-based powder bed fusion manufactured Alloy 718?
Conclusion
The study found that scanning strategies significantly influence the deformation and residual stresses in 3D printed Alloy 718 parts.
Supporting Evidence
- The study utilized high-energy synchrotron measurements to validate the predicted residual stresses.
- Different scanning strategies were shown to lead to varying levels of deformation in the printed parts.
- The inherent strain model was calibrated using experimental data from cantilever beams.
Takeaway
This study shows that the way you print metal parts can change how much they bend or stress, which is important for making strong and reliable products.
Methodology
The study used thermo-mechanical finite element modeling and inherent strain modeling to predict residual stresses and deformations in printed parts.
Limitations
The models may underpredict the magnitude of deformations and residual stresses.
Digital Object Identifier (DOI)
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