3％Si鋼中に析出したMnSeおよびMnSの地鉄との方位関係

髙宮 俊人; 石原 健; 宗藤 伸治; 山田 和広; 荒牧 正俊; 古君 修

doi:10.14940/netsushori.56.16

Research Paper

Orientation Relationships of MnSe/α-Fe and MnS/α-Fe in 3%Si Steel

Toshito TAKAMIYA, Takeshi ISHIHARA, Shinji MUNETOH, Kazuhiro YAMADA, Masatoshi ARAMAKI, Osamu FURUKIMI

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Keywords: Precipitation, Grain Oriented Silicon Steel, Inhibitor, MnSe, MnS, Interface Energy, Ab Initio, Thermo-mechanical Heat Treatment

JOURNAL RESTRICTED ACCESS

2016 Volume 56 Issue 1 Pages 16-21

DOI https://doi.org/10.14940/netsushori.56.16

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Abstract

The precipitation behavior of MnSe and MnS in 3mass％ Si grain oriented electrical steel is an important factor in secondary recrystallization. The observation by transmission electron microscope (TEM) showed that the orientation relationship between MnSe and bcc iron was (001)_α//(001)_MnSe, [010]_α//[010]_MnSe, [100]_α//[100]_MnSe On the other hand, the interfacial lattice between MnS and bcc iron was less compatible than that between MnSe and bcc iron. Estimation of an interfacial energy is necessary to consider the precipitation behavior. The interfacial energies of MnS and MnSe in bcc iron were calculated by using ab initio. The results revealed that the interfacial energy of MnSe was smaller than that of MnS.

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