Casted Strip Character of Twin-Roll Casted High Strength Non-Oriented Electrical Steel

Abstract:

A twin-roll casting process was used to produce high strength non-oriented electrical steel casted strips. The typical character in chemical composition is the adding of Ni and Cr.The main role of Ni and Cr is solution strengthening. MEM, SEM, and TEM were used to observe microstructure, texture, and precipitate characteristics of a casted strip. The casted strip character under different secondary cooling process was compared. The results show that water-cooled as-cast strip is composed of the equiaxed grains, air-cooled as-cast strip is characterized by a mixture of the quiaxed and columnar grains. The texture of water-cooled as-cast strip is weaker and diffuser than air-cooled as-cast strip. Precipitates mostly are AlN and MnS, which mostly precipitate in the grain. The precipitates of Ni and Cr is not observed. The size distinction of MnS between two secondary cooling process is not remarkable. The size of AlN in water-cooled process is smaller than in air-cooled process.

• Periodical: Advanced Materials Research (Volumes 690-693)
• Pages: 582-585
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.690-693.582
• Online since: May 2013
• Authors: Yu Qian Wang, Xiao Ming Zhang, Ting Zhang, Zhong Mian Fan
• Keywords: High Strength, Microstructure, Precipitate, Texture

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