Microstructure and Texture Evolution in Temper Rolled Fe-Si Steels with New System Nano-Inhibitors Under the Dynamic Annealing Conditions

Abstract

This work investigates the microstructure and texture evolution in grain-oriented electrotechnical steel with a new inhibition system based on vanadium carbides nano-particles. The novel approach for the preparation of this steel with appropriate final magnetic properties combines not only nanoinhibitors based on the vanadium carbides precipitations but also includes straininduced grain growth mechanism in combination with dynamic continuous annealing during the secondary recrystallization. The experimental grain-oriented steel with proposed new chemical composition was prepared in laboratory conditions. The texture analysis has shown that suggested procedure led the formation of sufficiently strong {110} Goss texture during the short time period of a final annealing process, which is comparable to that obtained in the conventionally treated grain-oriented steels.

Keywords

• Grain-oriented Fe-Si steels
• abnormal grain growth
• VC inhibitors
• microstructure
• texture