Correlations between Initial Goss Orientations with Different Deviation Angles and Evolution of Microstructure and Texture in Ultrathin Grain‐Oriented Silicon Steels. Issue 2 (23rd September 2020)

• Record Type: Journal Article
• Authors: Wang, Yin-Ping; Song, Hong-Yu; An, Ling-Zi; Wang, Guo-Dong; Liu, Hai-Tao
• Is Part Of: Steel research international. Volume 92:Issue 2(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-09-23
• Subjects: initial Goss orientation -- magnetic properties -- textures -- ultrathin grain-oriented silicon steel; Steel -- Periodicals; Steel -- Metallurgy -- Periodicals; 669.142
• DOI: 10.1002/srin.202000356
• Languages: English
• ISSNs: 1611-3683

Abstract

Abstract : Herein, four kinds of initial Goss textures with different deviation angles (0°, 5°, 10°, and 15°) are obtained by controlling the included angles between the longitudinal directions of rectangular cutting specimens and the initial rolling direction of the raw material. Then, 0.05 mm thick grain‐oriented silicon steels are fabricated by cold rolling and primary recrystallization annealing. Effects of initial textures on the microstructure and texture evolutions and magnetic properties are investigated in detail. Compared with sharp {111}<112> in the cold rolling sheet with initial exact Goss, the deviated Goss favors the formation of strong {111}<112> + weak {h11}<1/h 1 2> textures. After annealing, sharp {210}<001> + medium {110}<001> textures develop as a result of the small initial deviation, while larger initial deviations contribute to the {310}<001> texture. In addition, the average grain sizes are also related to recrystallization textures. Consequently, the distinct recrystallization microstructures and textures result in the differences of magnetic properties. Abstract : Herein, effects of initial Goss textures with different deviation angles on the microstructure and texture evolution and magnetic properties of ultrathin grain‐oriented silicon steel sheets are focused on. Sharp {210}<001> + medium {110}<001> textures and strong {310}<001> texture respectively develop in the annealing sheets having small and large initial deviations. Enhanced η ‐fiber texture contributes to the improvement of magnetic properties.