Lin Kexin; Yang Weiming; Li Wenyu; Ma Yan; Ma Li; Zhang Xiang; Liu Haishun

doi:10.7498/aps.74.20250559

Abstract
Fe-based amorphous alloys offer exceptional properties such as low coercivity and core losses. In recent years, interest has focused on developing amorphous alloys using selective laser melting (SLM) technology. However, the glass-forming ability (GFA) and mechanical properties pose challenges for fabricating Fe-based amorphous alloys with complex geometries. This work aims to establish fundamental processing-(micro)structure-property links in Fe-based amorphous alloys processed by selective laser melting (SLM). With that purpose, a low-energy-input melt pool was achieved and the overlap quality between adjacent melt tracks and successive deposited layers is enhanced., through optimization of printing parameters. The Fe-based amorphous alloy was obtained with a high relative density of 94.3% and a low coercivity of 0.5 Oe. Furthermore, the saturation magnetization of the printed alloy increased to 0.89 T compared to the powder feedstock. This work overcomes the mutually restrictive relationship between the glass-forming ability (GFA) and part quality during fabricating the complex-structure Fe-based amorphous alloys, holding significant implications for advancing the application of Fe-based amorphous alloys.

Keywords:
Fe-based amorphous alloys /

Selective laser melting /

Glass-forming ability /

Coercivity
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