Study on hydrogen embrittlement sensitivity of vanadium microalloyed martensite-bainite steel

Zhang Songqi; Li Yuanyuan; Wang Dejun

doi:10.7513/j.issn.1004-7638.2022.06.024

Volume 43 Issue 6

Jan. 2023

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Zhang Songqi, Li Yuanyuan, Wang Dejun. Study on hydrogen embrittlement sensitivity of vanadium microalloyed martensite-bainite steel[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 161-165. doi: 10.7513/j.issn.1004-7638.2022.06.024

Citation:

Zhang Songqi, Li Yuanyuan, Wang Dejun. Study on hydrogen embrittlement sensitivity of vanadium microalloyed martensite-bainite steel[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 161-165. doi: 10.7513/j.issn.1004-7638.2022.06.024

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Study on hydrogen embrittlement sensitivity of vanadium microalloyed martensite-bainite steel

doi: 10.7513/j.issn.1004-7638.2022.06.024

Hebi College of Engineering and Technology, Henan University of Technology, Hebi 458030, Henan, China

Received Date: 2022-05-15
Publish Date: 2023-01-13

Abstract

Abstract

The hydrogen embrittlement sensitivity of vanadium-free and vanadium-containing (0.15%) martensite-bainite steel was studied utilizing a scanning electron microscope and transmission electron microscope. The test results show that adding vanadium will refine the prior austenite structure in martensite-bainite steel and increase the proportion of the martensite phase in the steel. After tempering, vanadium will precipitate carbide, reducing hydrogen embrittlement sensitivity in the steel. The above phenomenon is mainly because after vanadium microalloying, the test steel will increase the number of prior austenite grain boundary and carbide/matrix interface as hydrogen traps and the concentration sites of hydrogen capture, significantly reducing the diffusion coefficient of hydrogen atoms in the steel, and make the distribution of hydrogen atoms more dispersed.
- martensite-bainite steel,
- vanadium microalloying,
- hydrogen permeation,
- hydrogen embrittlement sensitivity

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References(10)

References

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