Hydrogen embrittlement of high-strength marine steel as a weld joint in artificial seawater under cathodic polarization

Hongchi Ma; Liyang Sun; Hong Luo; Xiaogang Li

doi:10.1016/j.engfailanal.2022.106044

Hydrogen embrittlement of high-strength marine steel as a weld joint in artificial seawater under cathodic polarization

Hongchi Ma
, Liyang Sun
, Hong Luo^*
, Xiaogang Li

^*Corresponding author for this work

University of Science and Technology Beijing

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

Hydrogen embrittlement (HE) behavior of E690 high-strength steel as a weld joint was investigated in artificial seawater. The most vulnerable location and microstructure to HE was verified, and the underlying mechanism was clarified. Results showed that the weld metal with granular bainitic microstructure leads to premature fracture of the entire weld joint under slow strain rate tensile testing with in-situ hydrogen charging. Dislocation slip bands (DSBs) could be preferentially developed in this zone, and HE initiation was induced via dislocation–hydrogen interaction because the weld metal had the lowest local strength among the weld joint. Martensite/austenite (M/A) constituents and carbides could also contribute to crack initiation and propagation through microvoid coalescence and decohesion.

Original language	English
Article number	106044
Journal	Engineering Failure Analysis
Volume	134
DOIs	https://doi.org/10.1016/j.engfailanal.2022.106044
State	Published - Apr 2022
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 14 Life Below Water

Keywords

Artificial seawater
Cathodic polarization
HE
High-strength low-alloy steel
Weld joint

Access to Document

10.1016/j.engfailanal.2022.106044

Cite this

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title = "Hydrogen embrittlement of high-strength marine steel as a weld joint in artificial seawater under cathodic polarization",

abstract = "Hydrogen embrittlement (HE) behavior of E690 high-strength steel as a weld joint was investigated in artificial seawater. The most vulnerable location and microstructure to HE was verified, and the underlying mechanism was clarified. Results showed that the weld metal with granular bainitic microstructure leads to premature fracture of the entire weld joint under slow strain rate tensile testing with in-situ hydrogen charging. Dislocation slip bands (DSBs) could be preferentially developed in this zone, and HE initiation was induced via dislocation–hydrogen interaction because the weld metal had the lowest local strength among the weld joint. Martensite/austenite (M/A) constituents and carbides could also contribute to crack initiation and propagation through microvoid coalescence and decohesion.",

keywords = "Artificial seawater, Cathodic polarization, HE, High-strength low-alloy steel, Weld joint",

author = "Hongchi Ma and Liyang Sun and Hong Luo and Xiaogang Li",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = apr,

doi = "10.1016/j.engfailanal.2022.106044",

language = "英语",

volume = "134",

journal = "Engineering Failure Analysis",

issn = "1350-6307",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Hydrogen embrittlement of high-strength marine steel as a weld joint in artificial seawater under cathodic polarization

AU - Ma, Hongchi

AU - Sun, Liyang

AU - Luo, Hong

AU - Li, Xiaogang

PY - 2022/4

Y1 - 2022/4

N2 - Hydrogen embrittlement (HE) behavior of E690 high-strength steel as a weld joint was investigated in artificial seawater. The most vulnerable location and microstructure to HE was verified, and the underlying mechanism was clarified. Results showed that the weld metal with granular bainitic microstructure leads to premature fracture of the entire weld joint under slow strain rate tensile testing with in-situ hydrogen charging. Dislocation slip bands (DSBs) could be preferentially developed in this zone, and HE initiation was induced via dislocation–hydrogen interaction because the weld metal had the lowest local strength among the weld joint. Martensite/austenite (M/A) constituents and carbides could also contribute to crack initiation and propagation through microvoid coalescence and decohesion.

AB - Hydrogen embrittlement (HE) behavior of E690 high-strength steel as a weld joint was investigated in artificial seawater. The most vulnerable location and microstructure to HE was verified, and the underlying mechanism was clarified. Results showed that the weld metal with granular bainitic microstructure leads to premature fracture of the entire weld joint under slow strain rate tensile testing with in-situ hydrogen charging. Dislocation slip bands (DSBs) could be preferentially developed in this zone, and HE initiation was induced via dislocation–hydrogen interaction because the weld metal had the lowest local strength among the weld joint. Martensite/austenite (M/A) constituents and carbides could also contribute to crack initiation and propagation through microvoid coalescence and decohesion.

KW - Artificial seawater

KW - Cathodic polarization

KW - HE

KW - High-strength low-alloy steel

KW - Weld joint

UR - https://www.scopus.com/pages/publications/85123013572

U2 - 10.1016/j.engfailanal.2022.106044

DO - 10.1016/j.engfailanal.2022.106044

M3 - 文章

AN - SCOPUS:85123013572

SN - 1350-6307

VL - 134

JO - Engineering Failure Analysis

JF - Engineering Failure Analysis

M1 - 106044

ER -

Hydrogen embrittlement of high-strength marine steel as a weld joint in artificial seawater under cathodic polarization

Abstract

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Keywords

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