SOFT MAGNETIC STEEL AND METHOD FOR MANUFACTURING SAME, AND SOFT MAGNETIC COMPONENT OBTAINED FROM SOFT MAGNETIC STEEL

An object of the present invention to provide a soft magnetic steel that improves the magnetic properties, that is, the soft magnetic properties, the cold forgeability, and the magnetic aging characteristics without adding a large amount of alloy elements. The present invention is directed to a soft...

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Bibliographische Detailangaben
Hauptverfasser: CHIBA, Masamichi, MASUMOTO, Kei
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:An object of the present invention to provide a soft magnetic steel that improves the magnetic properties, that is, the soft magnetic properties, the cold forgeability, and the magnetic aging characteristics without adding a large amount of alloy elements. The present invention is directed to a soft magnetic steel, including C, Mn, P, S, Al, and N in each predetermined amount, in which an area ratio of carbides and carbonitrides that have a thickness of less than 0.4 µm is 0. 20 area% or less, and an area ratio M of carbides and carbonitrides that have a thickness of 0.4 µm or more in terms of percentage satisfies a relationship represented by the formula (1) below: F = M ˆ’ 20 × C > 0 where [C] means a C content in the steel in percentage by mass.