Regensburg 2025 – scientific programme

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MA: Fachverband Magnetismus

MA 7: INNOMAG e.V. Prizes 2025 (Diplom-/Master and Ph.D. Thesis)

MA 7.6: Invited Talk

Monday, March 17, 2025, 17:05–17:30, H18

Multiphysics-Multiscale Simulation of Additively Manufactured Functional Materials — •Yangyiwei Yang — Technische Universität Darmstadt, Darmstadt, Germany

The progress of additive manufacturing (AM) technologies has led to a growing interest in AM-produced magnetic functional materials with tailored properties, including magnetic coercivity, remanence and saturation magnetization. However, the lack of comprehensive research on the process-microstructure-property (PMP) relationship poses a significant challenge to the production of magnetic materials with designed properties by AM. In this work, a multiphysics-multiscale simulation framework has been developed to thoroughly investigate the PMP relationships in magnetic functional materials and to further facilitate simulation-driven property tailoring. The framework is methodically structured to ensure clarity and depth, with emphasis on key concepts with corresponding physical backgrounds. By employing the established framework, phenomenological relationships between AM processing parameters and the resulting material properties are obtained, notably magnetic hysteresis. The sensitivity of the local magnetic coercivity to residual stress states in AM-produced Fe-Ni permalloy is also revealed. In particular, the relationship between the average residual stress and the magnetic coercivity within the melt zone are shown to obey an exponential growth law, suggesting a strategy for tailoring the magnetic coercivity by controlling the residual stress within an AM-produced permalloy.

Keywords: Magnetic Materials; Additive Manufacturing; Magnetic Hysteresis; Microstructure; Multisphysics-multiscale Simulation