材料科学
磁滞
融合
磁滞
复合材料
环面
磁铁
选择性激光熔化
阴极射线
电子
微观结构
磁场
凝聚态物理
等离子体
磁化
机械工程
量子力学
物理
语言学
工程类
哲学
作者
Jing Yang,Zongwen Fu,Carolin Körner
标识
DOI:10.1002/adma.202300837
摘要
Fe93.5 Si6.5 (wt%) soft magnetic materials in toroidal shape are additively manufactured by means of electron beam powder bed fusion (PBF-EB). Different hatching strategies are applied to realize specific patterns of molten material alternating with non-molten powder particles. The specimens produced using different hatching strategies show identical relative densities but various structural features resulting in different magnetic properties. The magnetic performance of the specimens is characterized by determining hysteresis loops (B-H curves), power losses, and maximum magnetic flux density at frequencies between 50 and 1000 Hz. At constant mass, the different structures induced by using various hatching strategies have a strong influence on the hysteresis losses. These losses can be significantly reduced by applying a targeted structure design. The modified specimens show superior magnetic properties at sub-kHz compared to some soft magnetic materials fabricated by means of conventional methods and laser powder bed fusion (PBF-L).
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