Transformation of the spine in Mg-treated non-quenched and tempered steel

Li Zhiwei; Zeng Zhiqi; Xie Jianbo; Tian Qianren; Fu Jianxun

doi:10.7513/j.issn.1004-7638.2021.05.025

Volume 42 Issue 5

Oct. 2021

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2021 > 42(5): 164-169

Li Zhiwei, Zeng Zhiqi, Xie Jianbo, Tian Qianren, Fu Jianxun. Transformation of the spine in Mg-treated non-quenched and tempered steel[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 164-169. doi: 10.7513/j.issn.1004-7638.2021.05.025

Citation:

Li Zhiwei, Zeng Zhiqi, Xie Jianbo, Tian Qianren, Fu Jianxun. Transformation of the spine in Mg-treated non-quenched and tempered steel[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(5): 164-169. doi: 10.7513/j.issn.1004-7638.2021.05.025

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Transformation of the spine in Mg-treated non-quenched and tempered steel

doi: 10.7513/j.issn.1004-7638.2021.05.025

Li Zhiwei^1
,,
Zeng Zhiqi^{1, 2},
Xie Jianbo¹,
Tian Qianren¹,
Fu Jianxun^{1
,
,}

1.
Center for Advanced Solidification Technology, School of Materials Science and Engineering, Shanghai University, Shanghai 200072，China
2.
Baosight Software Co., Ltd. Information Service Headquarters, Shanghai 201900,China

Received Date: 2021-01-08
Publish Date: 2021-10-30

Abstract

Abstract

Based on the characteristics and formation of the Mg-treated inclusions in non-quenched and tempered steel, the misfit degrees of MgAl₂O₄+MnS was calculated to reveal the best growth surface and main action forces between the MgAl₂O₄inclusions. For Mg free steel, the sulfide in slab edge mainly precipitate in chain shape along grain boundary, while the sulfide in center slab is mainly in rod or angle shape. When Mg is added to the steel, the inclusions at the edge and center of slab are mainly spherical or chain like, and their size are small. The average area of inclusions in center area is reduced from 14.33 μm² to 8.78 μm², while in the edge area it is reduced from 3.17 μm² to 2.99 μm². Mg addition reduces the equivalent area of inclusions in the steel. The misfit degree between crystal face (110) of MnS and (110) of MgAl₂O₄ was 7.65%. The main acting force for the attachment of MgAl₂O₄ was cavity-bridge force of 1×10⁻⁸ N.
- non-quenched and tempered steel,
- Mg,
- MgAl₂O₄ inclusions,
- misfit degree

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References(18)

References

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