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Effect of Normalizing Annealing Temperature on Precipitates and Texture of Nb-Cr-Bearing Decarburized Grain-Oriented Silicon Steels

1,2, 1,2,*, 1, 1,2, 1,2 and 1,2
1
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
2
Key Laboratory of Ferrous Metallurgy and Resources Utilization, Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China
*
Author to whom correspondence should be addressed.
Metals 2019, 9(4), 457; https://doi.org/10.3390/met9040457
Received: 25 March 2019 / Revised: 8 April 2019 / Accepted: 13 April 2019 / Published: 18 April 2019
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Abstract

The evolution of precipitates and texture was investigated in Nb-Cr-bearing decarburized specimens after normalizing at different temperatures. Enough inhibitors, including Nb(C,N), were obtained, of 20~40 nm in size. Increasing normalizing annealing temperature leads to the number density of the precipitates decreasing and that of mean size increasing. The Goss texture content in the decarburized specimens decreases in different degrees compared with the normalized ones. The minimum Goss texture and maximum ∑9 grain boundaries were obtained in the decarburized specimen normalizing at 950 °C and in this specimen, enough fine dispersed inhibitors, weak but relative stable Goss texture and uniform grain size will be beneficial for Goss grains growth in secondary recrystallization, according to the coincidence site lattice theory. View Full-Text
Keywords: Nb-Cr-bearing grain-oriented silicon steels; annealing; precipitates; primary recrystallization; Goss texture Nb-Cr-bearing grain-oriented silicon steels; annealing; precipitates; primary recrystallization; Goss texture
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Liu, Y.; Zhu, C.; Jia, J.; Wang, Y.; Liu, Y.; Li, G. Effect of Normalizing Annealing Temperature on Precipitates and Texture of Nb-Cr-Bearing Decarburized Grain-Oriented Silicon Steels. Metals 2019, 9, 457.

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