Effect of titanium content on hydrogen embrittlement behavior of bainite/martensite dual-phase steel

Li Zhengjie; Zhang Wei; Liu Xiaojun

doi:10.7513/j.issn.1004-7638.2023.03.026

Volume 44 Issue 3

Jun. 2023

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Li Zhengjie, Zhang Wei, Liu Xiaojun. Effect of titanium content on hydrogen embrittlement behavior of bainite/martensite dual-phase steel[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 171-176. doi: 10.7513/j.issn.1004-7638.2023.03.026

Citation:

Li Zhengjie, Zhang Wei, Liu Xiaojun. Effect of titanium content on hydrogen embrittlement behavior of bainite/martensite dual-phase steel[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 171-176. doi: 10.7513/j.issn.1004-7638.2023.03.026

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Effect of titanium content on hydrogen embrittlement behavior of bainite/martensite dual-phase steel

doi: 10.7513/j.issn.1004-7638.2023.03.026

1.
Hebi College of Engineering and Technology, Henan University of Technology, Hebi 458030, Henan,China
2.
Anyang Iron and Steel Co., Ltd., Anyang 455000, Henan, China

Received Date: 2022-03-06
Publish Date: 2023-06-30

Abstract

Abstract

Three kinds of bainite/martensite dual-phase steels with different titanium content (0, 0.9, and 1.8 wt%) were smelted in this paper. The bainite content in the samples was changed by heat treatment to maintain the same strength level. The effect of bainite content on the hydrogen embrittlement resistance of bainite/martensite dual-phase steel was studied by electrochemical hydrogen charging and a slow strain rate tensile test. The results show that the test steel with a titanium content of 1.8 wt% has the highest bainite content and the best resistance to hydrogen embrittlement, mainly due to the capture of hydrogen atoms by irreversible traps such as cementite ferrite interface dislocations. In order to improve the hydrogen embrittlement resistance of bainite/martensite dual-phase steel, the number of fine cementite particles in the bainite structure can be increased, which provides more irreversible hydrogen traps for hydrogen migration during plastic deformation.
- dual-phase steel,
- titanium content,
- hydrogen trap,
- hydrogen embrittlement behavior

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References(10)

References

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