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Effect of Acid‐Soluble Aluminum Content on Precipitates and Microstructure of Annealed Hot‐Rolled Grain‐Oriented Silicon Steel
Author(s) -
Zhou Bowen,
Zhu Chengyi,
Li Guangqiang,
Wan Xiangliang,
Schneider Jürgen
Publication year - 2016
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201600056
Subject(s) - materials science , microstructure , metallurgy , aluminium , silicon , electrical steel , annealing (glass) , grain size
The effect of acid‐soluble aluminum (Al s ) content on precipitation behavior of precipitates, microstructures, and textures of annealed hot‐rolled grain‐oriented silicon steels are investigated. The results show that a large amount of fine AlN and a little amount of MnS–AlN composite can be obtained after hot band annealing. More fine precipitates are formed in specimen containing higher content of Al s . Al s content plays a negligible effect on the Goss texture formation during hot band annealing and similarly weak Goss texture component can be found in subsurface of annealed hot‐rolled bands with different Al s content. It is also found that MnS and AlN can have a combined inhibiting impact on the grain growth. AlN plays a more critical role on the inhibition of grain growth during hot band annealing. The more uniform and finer grains in subsurface of annealed hot‐rolled band are due to the effective inhibiting effect of finely and uniformly dispersed precipitates in steel with higher Al s content.