| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Numerical Investigation of the Strain Development at the Substrate / Laser Metal Deposition - Powder Refurbishment Interface |
| Author(s) |
Romain Bordas, Mathieu Calvat, Jonathan Cormier, Azdine Nait-Ali, Patrick Villechaise, Roland Fortunier |
| On-Site Speaker (Planned) |
Romain Bordas |
| Abstract Scope |
Numerous studies reported the mechanical properties of additive manufactured superalloys, but only a few focused on the mechanical response of the interface between the deposited material and the substrate. In this study, EBSD characterizations have been performed at the interface between a cast and wrought Waspaloy and a Laser Metal Deposition – Powder Waspaloy deposit to generate a representative synthetic 3D aggregate. This process locally impacted the microstructure which led to a 350-µm-thick Heat Affected Zone with a degraded γ' precipitation and an increased grain size. Then, full-field macro-homogeneous and crystal plasticity FE have been carried out on 2D-extruded from experimental EBSD data and synthetic 3D aggregate. For each microstructure, substrate or deposit have been treated independently and together. Strain and stress fields have enabled to highlight the influence of the refurbishment as well as microstructural characteristics gradient on the development of "hot spots" in terms of strain localizations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Mechanical Properties |