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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing of Functional, Energy, and Magnetic Materials
Presentation Title Modeling of Selective Laser Melting of NiTi Shape Memory Alloy: Laser Single Track and Melt Pool Dimension Prediction
Author(s) Hossein Abedi, Reza Javanbakht , Mohammadreza Nematollahi, Keyvan Safaei, Ala Qattawi, Mohammad Elahinia
On-Site Speaker (Planned) Hossein Abedi
Abstract Scope NiTi Shape memory alloys are used in a growing number of applications, with ongoing research on practical Additive Manufacturing (AM) processing focusing on arriving at optimized AM process parameters to develop functional NiTi devices with minimal post-processing. Mathematical modeling is a viable route to expedite the research on the effect of process parameters on the thermomechanical properties of the fabricated parts. In this work, a 3D thermal numerical model of a selective laser melting AM process for NiTi is developed in COMSOL. To this end, a single-track scanning of laser over the NiTi substrate has been modeled. The model is calibrated for the uncertain parameters. The calibration is performed through the experimental temperature measurements via a thermal camera for a specific set of laser process parameters. The model is applied to predict the melt pool dimensions by highlighting the areas where the temperature is above the melting temperature of NiTi.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Modeling and Simulation, Other


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