METHOD OF FORMING{100} TEXTURE ON SURFACE OF IRON OR IRON-BASE ALLOY SHEET, METHOD OF MANUFACTURING NON- ORIENTED ELECTRICAL STEEL SHEET BY USING THE SAME AND NON- ORIENTED ELECTRICAL STEEL SHEET MANUFACTURED BY USING THE SAME

摘要

pAn iron or iron-base alloy sheet having high proportion of { 100} texture and a method of manufacturing the same. A method of forming grains having { 100} plane parallel to the sheet surface is disclosed. A Fe or Fe-base alloy sheet is annealed at austenite (?) temperature while minimizing an effect of oxygen in the sheet or on surfaces of the sheet or a heat treatment atmosphere, and then the above sheet is subject to phase transformation to ferrite (a). On surfaces of the resulting sheet, a high proportion of { 100} texture develops. A method of manufacturing electrical steel sheet is disclosed. The grains with { 100} texture on surfaces grow to have a grain size of at least half the thickness of the sheet by a ??a transformation. By adopting the above disclosed methods, an iron or iron-base alloy sheet with excellent texture can be simply manufactured within short time./p [WO2008078921A1]