| 摘要 |
PROBLEM TO BE SOLVED: To provide an Fe-based metal plate having high magnetic flux density and high strength.SOLUTION: There is provided an Fe-based metal plate having a plurality of areas having different composition in a plate thickness direction in a layer and containing Fe of 70 mass% or more. The Fe-based metal plate has a concentrated region by alloying and concentrating at least one or more kind of ferrite production element of Al, Ga, Mo, Nb, Si, Sn, Ti, V, W, Zn, Cr, Ge and Sb from a center part in a plate thickness direction toward a plate surface, and a composition where at least 3/10 plate thickness area as total on both sides from a plate center of the concentrated area or all area of the concentrated area is an α-Fe single phase component-based and an area of outer side thereof is component capable of producing an α-γ transformation, an area of at least 1/2 plate thickness at total on both sides from the plate center is an area with coarse particle having average crystal particle diameter of over 8 μm, {200} area integration degree in the area of the coarse particle structure is 30% to 99% and an area of at least 1/10 plate thickness from a plate surface of an outside of the coarse particle structure is a fine particle structure having average crystal particle diameter of 8 μm or less.SELECTED DRAWING: None |
