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Foundations of Additive Manufacturing Course – Project Posters: Poster Session
Program Organizers: TMS Administration

Tuesday 5:30 PM
March 1, 2022
Room: Exhibit Hall C
Location: Anaheim Convention Center

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J-46: A CFD Model to Predict the Thermo-fluid Properties of AlCoCrFeNi High Entropy Alloy in Powder-bed Laser Beam Additive Manufacturing: Chayan Das¹; Praveen Sreeramagiri¹; Ganesh Balasubramanian¹; ¹Lehigh University
    The complex solidification cycles exerted on high entropy alloys (HEAs) processed using laser based additive manufacturing (AM) techniques, often leads to certain artifacts (such as cracks), affecting the build quality; which is a function of process parameters employed (viz., laser power, scan speed, hatch distance, etc.), and their effects on the thermal properties (such as the gradients and their associated stresses). Using a three-dimensional computational fluid dynamics (CFD) model, we examine the effect of various process parameters on the thermal behavior while processing AlCoCrFeNi high entropy alloy. Our model utilizes an external volumetric heat source to simulate a moving laser, leveraging the principles of thermodynamics based CALPHAD/Schiel simulations to estimate the thermal properties of the melt-pool. Our model provides valuable insights on the effects of various processing conditions on the thermodynamic properties (viz., temperature field, thermal conductivity, etc.) of the material while processing.

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