|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||Physical and Chemical Properties of Melt-spun Fe<sub>bal</sub>Si<sub>x</sub> (x = 3-8 wt. %) Soft Magnetic Ribbons
||Nicole Overman, Xiujuan Jiang, Ravi K Kukkadapu, Trevor Clark, Timethy J. Roosendaal, Gregory Coffey, Jeffrey E. Shield, Suveen Mathaudhu
|On-Site Speaker (Planned)
Fe-Si alloys with silicon contents ranging from 3 to 8 wt. % were rapidly solidified at wheel speeds of 30 m/s and 40 m/s using melt spinning. The resultant ribbons were 20-30 μm thick and approximately 3 mm wide. Scanning electron microscopy confirmed that increasing the wheel speed refined both the ribbon thickness and grain size. Mössbauer spectroscopic studies indicated: a) Si content had a significant influence on the number of Fe sites, relative abundance of various Fe species, and internal magnetic fields/structural environments, and b) wheel speed affected Fe speciation only in the 3 wt. % sample. Electrical resistivity of the ribbons was tested and an increasing trend was observed that corresponded to elevated Si content and a reduction in grain size. Mechanical properties including hardness were obtained using nano-indentation and also showed an increasing trend that correlated to both increased Si content as well as increased wheel speed.
||Planned: None Selected