氢脆对 316L 不锈钢焊接接头疲劳性能的影响

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-04-18 DOI:10.1016/j.ijhydene.2025.04.279

M. António , J.S. Jesus , L. Vilhena , L.P. Borrego , R. Branco , E.L. Silva , J.A.M. Ferreira

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引用次数: 0

摘要

氢脆（HE）是影响储氢和输氢材料（包括焊接接头）结构完整性的关键问题。研究了HE对316L奥氏体不锈钢焊接接头疲劳行为的影响。对基材、焊接接头和充氢焊接接头进行拉伸和疲劳试验，以评估其力学性能的退化情况。结果表明，焊接显著降低了材料的疲劳强度，而氢的存在进一步加剧了这种影响。显微组织分析证实焊缝中形成了奥氏体-铁素体双相组织，δ铁素体提高了抗热裂性，但增加了HE敏感性。焊珠在充氢条件下的断口形貌检查显示出典型的氢致开裂。

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Influence of hydrogen embrittlement on the fatigue behaviour of 316L stainless steel welded joints

Hydrogen embrittlement (HE) is a critical issue affecting the structural integrity of materials, including welded joints, used in hydrogen storage and transportation. In this study, the influence of HE on the fatigue behavior of 316L austenitic stainless-steel welded joints was investigated. Tensile and fatigue tests were performed on base material, welded joints, and hydrogen-charged welded joints to assess the degradation in their mechanical properties. The results revealed that welding significantly reduced the fatigue strength of the material, and the presence of hydrogen further intensified this effect. Microstructural analysis confirmed the formation of austenitic-ferritic duplex microstructures in the weld bead, with delta ferrite improving resistance to hot cracking but increasing susceptibility to HE. Fractographic examination of weld beads exposed to hydrogen charging showed characteristic hydrogen-induced cracking.

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.