SIM-AM 2025

Microstructure-based Property Tailoring of Additively Manufactured Porous Materials Studied by Multiphysics and Multiscale Phase-field Modeling

  • Yang, Yangyiwei (Technische Universität Darmstadt)
  • Xu, Bai-Xiang (Technische Universität Darmstadt)

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Modeling and simulation of additive manufacturing aims to complement the current time-consuming and costly trial-and-error principle with an efficient computational design tool. Nevertheless, it remains a significant challenge due to the sophisticated and interactive nature of underlying physics, which covers a broad range of time and length scales and strongly depends on the processing parameters (incl. beam size and power, as well as scan speed) [1]. A unified modeling scenario considering scale effects and multiphysics coupling is essential for the reliable microstructure prediction. We have developed a non-isothermal phase-field modeling scenario coupled with multiphysics, such as fluid dynamics, heat transfer, phase transition, and magnetization dynamics, to recapitulate microstructure evolution and related phenomena from multiple time/length scales and reveal their interactions during the PBF, which are not accessible to the conventional isothermal model. Models are derived under a thermodynamically consistent platform according to our latest work and numerically implemented by the finite element method (FEM) [2, 3]. We further perform the parameter investigations of the PBF procedure. The influences from the processing parameters on the properties, incl., thermal, mechanical, and magnetic, are also discussed based on property homogenization [4, 5, 6].