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Generically Dependent Continuant
RDF description of Processing and microstructure of grain non-oriented electrical steel strips with improved magnetic properties - http://orbis.uaslp.mx/vivo/individual/scopus8397
Article
Electrical steels; Magnetic properties; Microstructure; Texture Aluminum alloys; Annealing; Cold rolled steel; Cold rolling; Ferrite; Hot rolling; Magnetic properties; Magnetism; Microstructure; Silicon alloys; Strip metal; Textures; Alternative processing routes; Deformed ferrite; Electrical steels; Ferrite grains; Hot-rolled strip; Intercritical regions; Non-oriented electrical steel; Polygonal ferrites; Silicon steel
Processing and microstructure of grain non-oriented electrical steel strips with improved magnetic properties
The effects of annealing prior to cold rolling on the microstructure and magnetic properties of a low-C grain non-oriented (GNO) electrical steel strip have been investigated. It is shown that annealing of the hot-rolled strips in the intercritical region, Ac1<T<Ac3, causes rapid decarburization and development of large columnar ferrite grains. This microstructure leads, after cold-rolling and a fast annealing treatment at temperatures between 800 and 850 °C, to a polygonal ferrite grain microstructure with magnetic properties superior to those observed typically in the same steel in the industrial fully processed condition. The results are attributed to the {100}-fiber texture developed during the final annealing. Annealing at T<800 °C or T>850 °C results in formation of {111}-fiber texture components due to recristallization or transformation of deformed ferrite leading to a negative effect on the final magnetic properties. The results suggest that annealing prior to cold rolling offers an attractive alternative processing route for the manufacture of fully processed low-C, Si-Al GNO electrical steels strips. © 2012 Trans Tech Publications, Switzerland.
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