文献类型：期刊文献

英文题名：Recent Progress in Hydrogen Embrittlement of Welded Joints of High-Strength Low-Alloy Steel: Focusing on Microstructure

作者：Tang, Ye[1];Liu, Zhenguang[1,2];Gao, Xiuhua[2];Xi, Xiaohui[3];Wang, Jinliang[3];Liu, Ziquan[4]

机构：[1]Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212100, Jiangsu, Peoples R China;[2]Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Liaoning, Peoples R China;[3]Guangdong Ocean Univ, Sch Mech Engn, Zhanjiang 524088, Peoples R China;[4]Hebei Iron & Steel Grp Co Ltd, HBIS Hansteel Technol Ctr, Handan 056000, Hebei, Peoples R China

年份：2025

外文期刊名：STEEL RESEARCH INTERNATIONAL

收录：SCI-EXPANDED(收录号：WOS:001526623600001)、、EI(收录号：20252818767420)、Scopus(收录号：2-s2.0-105010248393)、WOS

基金：This research was financially supported by the Open Research Fund from the State Key Laboratory of Rolling and Automation, Northeastern University (grant no. 2023RALKFKT001), the Science and Technology Projects of Zhanjiang (grant no. 2021E05003), and National Science Fund of China (grant no. 52005228).

语种：英文

外文关键词：hydrogen embrittlement; low-alloy steels; welding

外文摘要：Hydrogen embrittlement (HE) occurs as a result of hydrogen atom ingress and causes a significant decrease in plasticity and strength, making it a crucial failure mode in high-strength low-alloy steels. The microstructure plays a vital role in HE fracture behavior because of the various hydrogen trappings. The welding thermal cycle and alloying elements determine the great difference of the microstructure of the welded joint. Thus, this article reviews the current studies investigating the role of the microstructure in determining the HE behavior of the welded joints, thereby aiming to reveal the fracture process and mechanism. Dislocations and inclusions in welded joints reduce HE resistance. Acicular ferrite with a fine interlocking structure can block the prolonging of hydrogen-induced cracking. The transformation of the retained austenite with a high concentration of hydrogen atoms into martensite accelerates HE fractures. The delta-ferrite in the welded joint promotes the HE resistance deterioration and hydrogen-induced cracking. Appropriate coating of the steel surface is an effective approach for preventing HE fractures.