Effects of Nb on stress corrosion cracking of high-strength low-alloy steel in simulated seawater

Qianqian Qiao; Lin Lu; Endian Fan; Jinbin Zhao; Yanning Liu; Guangchun Peng; Yunhua Huang; Xiaogang Li

doi:10.1016/j.ijhydene.2019.08.259

Effects of Nb on stress corrosion cracking of high-strength low-alloy steel in simulated seawater

Qianqian Qiao
, Lin Lu
, Endian Fan
, Jinbin Zhao
, Yanning Liu
, Guangchun Peng
, Yunhua Huang^*
, Xiaogang Li

^*此作品的通讯作者

University of Science and Technology Beijing
Nanjing Iron & Steel Co., Ltd.

科研成果: 期刊稿件 › 文章 › 同行评审

39 引用（Scopus）

摘要

In this study, simulated heat-affected zone (HAZ) of Nb-free and Nb-bearing steel were obtained, and SEM, TEM, and slow strain rate tensile (SSRT) tests were performed to investigate the effect of Nb on the stress corrosion cracking (SCC) behavior of high-strength low-alloy (HLSA) steel in simulated seawater with or without hydrogen charging. The addition of Nb significantly refined the grains and uniformed the microstructure of HLSA. Nb hardly affected the SCC susceptibility of BM and HAZ without hydrogen-charging. However, after charging with 10 mA cm⁻², the SCC resistance of Nb-bearing steel, especially the coarse grain HAZ (CGHAZ) improved drastically, and the process of crack initiation and propagation was inhibited owing to the hydrogen trap function of NbC precipitates.

源语言	英语
页（从-至）	27962-27973
页数	12
期刊	International Journal of Hydrogen Energy
卷	44
期	51
DOI	https://doi.org/10.1016/j.ijhydene.2019.08.259
出版状态	已出版 - 22 10月 2019
已对外发布	是

联合国可持续发展目标

此成果有助于实现下列可持续发展目标：

可持续发展目标 7 经济适用的清洁能源

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10.1016/j.ijhydene.2019.08.259

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@article{459a874f9e8e4c1aa5a686fc388770ae,

title = "Effects of Nb on stress corrosion cracking of high-strength low-alloy steel in simulated seawater",

abstract = "In this study, simulated heat-affected zone (HAZ) of Nb-free and Nb-bearing steel were obtained, and SEM, TEM, and slow strain rate tensile (SSRT) tests were performed to investigate the effect of Nb on the stress corrosion cracking (SCC) behavior of high-strength low-alloy (HLSA) steel in simulated seawater with or without hydrogen charging. The addition of Nb significantly refined the grains and uniformed the microstructure of HLSA. Nb hardly affected the SCC susceptibility of BM and HAZ without hydrogen-charging. However, after charging with 10 mA cm−2, the SCC resistance of Nb-bearing steel, especially the coarse grain HAZ (CGHAZ) improved drastically, and the process of crack initiation and propagation was inhibited owing to the hydrogen trap function of NbC precipitates.",

keywords = "HAZ, HSLA steel, Hydrogen-charging, Nanosized NbC precipitates, SCC",

author = "Qianqian Qiao and Lin Lu and Endian Fan and Jinbin Zhao and Yanning Liu and Guangchun Peng and Yunhua Huang and Xiaogang Li",

note = "Publisher Copyright: {\textcopyright} 2019 Hydrogen Energy Publications LLC",

year = "2019",

month = oct,

day = "22",

doi = "10.1016/j.ijhydene.2019.08.259",

language = "英语",

volume = "44",

pages = "27962--27973",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

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}

TY - JOUR

T1 - Effects of Nb on stress corrosion cracking of high-strength low-alloy steel in simulated seawater

AU - Qiao, Qianqian

AU - Lu, Lin

AU - Fan, Endian

AU - Zhao, Jinbin

AU - Liu, Yanning

AU - Peng, Guangchun

AU - Huang, Yunhua

AU - Li, Xiaogang

PY - 2019/10/22

Y1 - 2019/10/22

N2 - In this study, simulated heat-affected zone (HAZ) of Nb-free and Nb-bearing steel were obtained, and SEM, TEM, and slow strain rate tensile (SSRT) tests were performed to investigate the effect of Nb on the stress corrosion cracking (SCC) behavior of high-strength low-alloy (HLSA) steel in simulated seawater with or without hydrogen charging. The addition of Nb significantly refined the grains and uniformed the microstructure of HLSA. Nb hardly affected the SCC susceptibility of BM and HAZ without hydrogen-charging. However, after charging with 10 mA cm−2, the SCC resistance of Nb-bearing steel, especially the coarse grain HAZ (CGHAZ) improved drastically, and the process of crack initiation and propagation was inhibited owing to the hydrogen trap function of NbC precipitates.

AB - In this study, simulated heat-affected zone (HAZ) of Nb-free and Nb-bearing steel were obtained, and SEM, TEM, and slow strain rate tensile (SSRT) tests were performed to investigate the effect of Nb on the stress corrosion cracking (SCC) behavior of high-strength low-alloy (HLSA) steel in simulated seawater with or without hydrogen charging. The addition of Nb significantly refined the grains and uniformed the microstructure of HLSA. Nb hardly affected the SCC susceptibility of BM and HAZ without hydrogen-charging. However, after charging with 10 mA cm−2, the SCC resistance of Nb-bearing steel, especially the coarse grain HAZ (CGHAZ) improved drastically, and the process of crack initiation and propagation was inhibited owing to the hydrogen trap function of NbC precipitates.

KW - HAZ

KW - HSLA steel

KW - Hydrogen-charging

KW - Nanosized NbC precipitates

KW - SCC

UR - https://www.scopus.com/pages/publications/85072574500

U2 - 10.1016/j.ijhydene.2019.08.259

DO - 10.1016/j.ijhydene.2019.08.259

M3 - 文章

AN - SCOPUS:85072574500

SN - 0360-3199

VL - 44

SP - 27962

EP - 27973

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 51

ER -

Effects of Nb on stress corrosion cracking of high-strength low-alloy steel in simulated seawater

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联合国可持续发展目标

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