In-situ precipitation of carbides significantly enhances the hydrogen embrittlement resistance of advanced high-strength steels welded joints - Details

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Abstract：

This　study　employed　the　laser　in-situ　post-weld　heat　treatment　process　to　achieve　in-situ　precipitation　of　carbides　(IPC)　in　the　hydrogen　embrittlement　(HE)　sensitive　zone　of　QP980　steels　laser　welded　joints.　In　the　original　joint　with　hydrogen　pre-charging,　cleavage　fracture　occurred　at　the　inter-critical　heat　affected　zone　(ICHAZ).　The　IPC　process　only　caused　carbides　to　precipitate　in　martensite　of　the　ICHAZ.　The　IPC　joint　with　hydrogen　pre-charging　(5　min)　exhibited　ductile　fracture　at　the　base　material　during　the　slow　strain　rate　tensile　test,　and　the　total　elongation　HE　sensitivity　of　the　joint　was　reduced　from　84.6　%　to　13.7　%.　©　2025　Elsevier　Ltd

Keyword：

Laser beam welding Tensile testing Heat affected zone Hydrogen embrittlement Zone melting Laser heating Textures Ductile fracture

Author Community：

[ 1 ] [Xue, Junliang]School of Mechanical Engineering and Automation, Beihang University, Beijing; 100191, China
[ 2 ] [Guo, Wei]School of Mechanical Engineering and Automation, Beihang University, Beijing; 100191, China
[ 3 ] [Guo, Wei]Jiangxi Research Institute, Beihang University, Nanchang; 330096, China
[ 4 ] [Xia, Mingsheng]R&D Center, TANGSTEEL Company, HBIS Group, Tangshan; 063016, China
[ 5 ] [Tan, Caiwang]Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai; 264209, China
[ 6 ] [Shi, Jiaxin]School of Mechanical Engineering and Automation, Beihang University, Beijing; 100191, China
[ 7 ] [Zhang, Yongxin]School of Mechanical Engineering and Automation, Beihang University, Beijing; 100191, China
[ 8 ] [Wan, Zhandong]College of Materials Science and Engineering, Beijing University of Technology, Beijing; 100124, China
[ 9 ] [Li, Yulong]School of Advanced Manufacturing, Nanchang University, Nanchang; 330031, China
[ 10 ] [Zhang, Hongqiang]School of Mechanical Engineering and Automation, Beihang University, Beijing; 100191, China
[ 11 ] [Zhang, Hongqiang]Jiangxi Research Institute, Beihang University, Nanchang; 330096, China

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Related Keywords：

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Source ：

Corrosion Science

ISSN： 0010-938X

Year： 2025

Volume： 245

8 . 3 0 0

JCR@2022

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 2

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 11

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