Investigation on Inclusions in Non-oriented Silicon Steels
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Inclusions in non-oriented electrical steels were automatically measured using Explorer 4 and extracted with a non-aqueous solution electrolytic method to observe their three-dimension morphology. Extracted inclusions were collected and prepared for micro-XRD test, which is performed to identify the crystal structure of inclusions. Inclusions mainly consist of AlN with P63mc structure, MnS with Fm-3m structure and Al2O3 with R-3c structure, and calculated lattice parameters of inclusions almost agree with that listed in standard PDF cards.
The authors are grateful for the support from the National Natural Science Foundation (Grant No. U1708252) and the Highly Clean Steel Laboratory (HCSL), Advanced Steels Research Division, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences.