Evolution of microstructure at hot band annealing of ferritic FeSi steels

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• 作者：Jü ; rgen Schneider^a ; ^b ; ^{juergen.schneider@t-online.de" class="auth_mail" title="E-mail the corresponding author} ; Guangqiang Li^c ; Armin Franke^b ; Bowen Zhou^c
• 关键词：Magnetic iron-silicon steels ; Hot band annealing ; Microstructure ; Laser-microscopy ; EBSD
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：424
• 期：Complete
• 页码：26-32
• 全文大小：1846 K

文摘

The magnetic properties of the finally fabricated nonoriented FeSi steels critically depend on the microstructure and on the occurring crystallographic texture. The fabrication route comprises hot rolling, coiling and cooling, hot band annealing before cold rolling (optional), cold rolling and the final thermal treatment. As well known there is an interplay between the microstructure and texture during the various processing steps. For that reason, it is of interest to know more on the evolution of the microstructure at hot band annealing of hot band prepared in different ways. In this paper we will summarize our recent results on the evolution of microstructure during thermal annealing of hot band: thermal treatment following immediately the last pass of hot rolling or a hot band annealing as a separate processing step before cold rolling.