About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
Understanding AM 316L Steel Microstructure Evolution due to Post-process Laser Scanning: A Thermo-mechanical Modeling and In-situ Laser-SEM Study |
Author(s) |
Nikhil Mohanan, Juan Guillermo Santos Macias, Jérémy Bleyer, Thomas Helfer, Manas V Upadhyay |
On-Site Speaker (Planned) |
Juan Guillermo Santos Macias |
Abstract Scope |
We have developed a strongly-coupled thermo-elasto-viscoplastic finite element (T-EVP-FE) model to study polycrystalline evolution during thermo-mechanical processes such as additive manufacturing, quenching, welding, etc.
In this work, the T-EVP-FE model is applied to study the evolution of an additively manufactured (AMed) microstructure subjected to post-build single and multi-pass laser scanning. Recently, we performed a series of experiments using a novel and unique coupling between a continuous-wave laser and an SEM developed in our laboratory and studied the polycrystalline evolution of an AMed microstructure using EBSD.
In this talk, we will present the T-EVP-FE model, compare the microstructure state with experimental observations and use the simulation results to gain a deep understanding of the origin of intergranular residual stresses, plastic deformation, dislocation density formation, etc. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, Characterization |