Research on the Abnormal Grain Growth of Goss Grains in Strip-Cast 4.5%Si Grain-Oriented Electrical Steels

Abstract:

In conventional production of grain-oriented electrical steel, the content of silicon is limited to 3.0%~3.4%, which could control the ‘γ→α’ transformation process to obtain fine grain sizes in hot-rolling and disperse AlN particles in normalizing. In this study, the precipitation behaviors of S ans N in 4.5% Si-Fe alloy are inhibited during twin-roll strip casting process. And then the ideal microstructure and texture was obtained after the two-stage cold rolling and primary annealing. The evolution of microstructure and texture during the subsequent high temperature annealing were investigated. The results revealed that a sharp and developed Goss texture has been achieved by secondary recrystallization in the final annealing step and the magnetic induction B8 /Bsis above 1.76/1.90T.

• Periodical: Applied Mechanics and Materials (Volumes 633-634)
• Pages: 858-864
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.633-634.858
• Online since: September 2014
• Authors: Y.X. Zhang*, Feng Fang, Yun Bo Xu, Yang Wang, Xiang Lu, Guang Ming Cao, Cheng Gang Li, Yong Mei Yu
• Keywords: Grain-Oriented 4.5%Si Steel, Magnetic Property, Secondary Recrystallization, Texture, Twin-Roll Strip Casting

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