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MM: Fachverband Metall- und Materialphysik

MM 20: Topical Session: Thermophysical Properties of Bulk Metallic Glasses and Bulk Metallic Glass-forming Liquids

MM 20.1: Topical Talk

Mittwoch, 19. März 2025, 15:45–16:15, H10

Magnetic properties of Fe-based amorphous alloys produced by melt-spinning and selective laser melting — •Paola Tiberto — INRIM, Torino, Italy

Amorphous soft-magnetic materials play an important role as core constituents in improving the energy transformation efficiency of electrical machines and passive electrical components. Although the melt-spinning process remains the main technique for obtaining amorphous soft-magnetic ribbons with remarkable soft magnetic properties, new and efficient production methods based on additive manufacturing have been developed in recent years, enabling the direct synthesis of larger elements. Ribbons were obtained by a conventional melt-spinning process while 3D-printed samples were produced by additive manufacturing via Selective Laser Melting (SLM) using powder of the same alloy as a precursor. In this study, we investigate the hysteresis properties of amorphous Fe-Si-B-based alloys in ribbon shape and 3D-printed bulk samples produced by different casting techniques. The SLM processing conditions have been observed to play a crucial role in the microstructure of the printed parts and, therefore, in their magnetic properties, due to their dependence on morphology. The effect of different printing parameters on magnetic properties, such as laser power and scan speed, has been studied. This study highlights the critical link between microstructure engineering through manufacturing techniques and the resulting magnetic performance, offering insights into optimizing both for enhanced energy efficiency in magneto-electrical applications.

Keywords: Amorphous alloys; Magnetic properties; Hysteresis losses; Selective Laser melting