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Journal of Iron and Steel Research International

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03.11.2020 | Original Paper

Effect of Mg addition on temper embrittlement in 2.25Cr–1Mo steel doped with 0.056% P–Mg segregation behavior at grain boundary

verfasst von: Xiao-bing Li, Xin Dong, Peng-xiang Zhao, Wei-wei Xing, Lei-lei Ding, Nan-nan Zhang, Ying-che Ma, Kui Liu

Erschienen in: Journal of Iron and Steel Research International | Ausgabe 10/2021

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Abstract

To verify the microalloying function and segregation behavior of trace Mg at grain boundary in steel, the 2.25Cr–1Mo steel doped with 0.056% P containing different Mg contents was refined with a vacuum-induction furnace. The effects of trace Mg addition on the temper embrittlement susceptibility of 2.25Cr–1Mo steel were studied by step-cooling test and the segregation behavior of Mg at grain boundary was explored by Auger electron spectroscopy. It is shown that P-induced temper embrittlement susceptibility can be reduced after subjecting to step-cooling treatment with trace Mg addition, mainly benefited from the segregation of Mg at grain boundary. This segregation can decrease the segregation amounts of P and S, especially for P, and increase the grain boundary cohesion, reducing the adverse effect on temper embrittlement caused by P and S.

Vorheriger Artikel Effect of Ce on solute redistribution in liquid ahead of solid–liquid interface during solidification of Fe–4 wt.%Si alloy

Nächster Artikel Relationship between martensite microstructure and ductility of H13 steel from aspect of crystallography

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Titel: Effect of Mg addition on temper embrittlement in 2.25Cr–1Mo steel doped with 0.056% P–Mg segregation behavior at grain boundary
verfasst von: Xiao-bing Li
Xin Dong
Peng-xiang Zhao
Wei-wei Xing
Lei-lei Ding
Nan-nan Zhang
Ying-che Ma
Kui Liu
Publikationsdatum: 03.11.2020
Verlag: Springer Singapore
Erschienen in: Journal of Iron and Steel Research International / Ausgabe 10/2021
Print ISSN: 1006-706X
Elektronische ISSN: 2210-3988
DOI: https://doi.org/10.1007/s42243-020-00506-w

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