|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Functional, Energy, and Magnetic Materials
||Modeling of Selective Laser Melting of NiTi Shape Memory Alloy: Laser Single Track and Melt Pool Dimension Prediction
||Hossein Abedi, Reza Javanbakht , Mohammadreza Nematollahi, Keyvan Safaei, Ala Qattawi, Mohammad Elahinia
|On-Site Speaker (Planned)
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.
||Additive Manufacturing, Modeling and Simulation, Other