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铁基非晶合金具有低矫顽力、低损耗等优异性能，但受制于非晶形成能力和力学性能限制，难以制备复杂结构器件。3D打印理论上可以制备任意结构的器件。本文利用选择性激光熔化3D打印技术，通过打印参数优化，获得低能量输入熔池，并提高熔池轨道和成型层的搭接质量，成功克服制备过程中非晶相与成型质量相互制约的瓶颈，获得致密度为94.3%、矫顽力为0.5 Oe的铁基非晶合金，且相比粉末，所得铁基非晶合金的饱和磁化强度提升至0.89 T，并制备出复杂结构的铁基非晶器件。本文研究为3D打印高质量铁基非晶器件提供了新的思路，对推动铁基非晶合金的应用具有重要意义。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.
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