About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing Modeling, Simulation and Machine Learning
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Presentation Title |
Crystal Plasticity Modeling of Thermo-elastic-plastic Deformation during Laser-based Additive Manufacturing |
Author(s) |
Yazhuo Liu, Kunqing Ding, Yin Zhang, Ting Zhu |
On-Site Speaker (Planned) |
Yazhuo Liu |
Abstract Scope |
Laser-based additive manufacturing involves complex heat deposition processes. The resulting thermo-elastic-plastic deformation governs the morphology, microstructure and residual stresses of additively manufactured materials. Substantial efforts are being devoted to direct imaging and measurements of the dynamic response of laser melt pools and surrounding materials. However, it remains a challenge for real-time characterization of thermo-elastic-plastic deformation during laser printing. Recently, an in-situ experimental technique has been developed for plastic strain visualization of laser-processed metals. As a result, slip traces within and outside laser-scanned tracks have been revealed on the surface of Ni single crystals. In this work, we develop a coupled thermal and crystal plasticity model to investigate the complex thermal histories and resulting thermo-elastic-plastic deformation at laser-scanned tracks. Our FE simulation results establish mechanistic connections between the surface slip traces and thermo-elastic-plastic deformation at laser-scanned tracks, thereby providing crucial insights into the control and optimization of laser-based additive manufacturing processes. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, |