预充氢时间对不同显微组织无缝钢管钢高压氢脆敏感性影响

doi:10.11902/1005.4537.2025.179

中国腐蚀与防护学报

2026, Vol. 46

Issue (3): 787-797 CSTR: 32134.14.1005.4537.2025.179 DOI: 10.11902/1005.4537.2025.179

研究报告

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预充氢时间对不同显微组织无缝钢管钢高压氢脆敏感性影响

徐云峰¹, 程凯源¹, 黄峰¹(

), 杨宝齐², 程向龙², 昝启飞², 彭志贤¹, 刘静¹

^1.武汉科技大学材料学部湖北省海洋工程材料及服役安全工程技术研究中心武汉 430081
^2.衡钢华菱钢管有限公司衡阳 421001

Effect of Hydrogen Pre-charging Time on Hydrogen Embrittlement Susceptibility in High Pressure Hydrogen Environment for Two Seamless Steel Pipe Steels with Different Microstructures

XU Yunfeng¹, CHENG Kaiyuan¹, HUANG Feng¹(

), YANG Baoqi², CHENG Xianglong², ZAN Qifei², PENG Zhixian¹, LIU Jing¹

^1.Hubei Engineering Technology Research Centre of Marine Materials and Service Safety, Faculty of Materials, Wuhan University of Science and Technology, Wuhan 430081, China
^2.Heng Steel Valin Steel Pipe Co. Ltd., Hengyang 421001, China

引用本文:

徐云峰, 程凯源, 黄峰, 杨宝齐, 程向龙, 昝启飞, 彭志贤, 刘静. 预充氢时间对不同显微组织无缝钢管钢高压氢脆敏感性影响[J]. 中国腐蚀与防护学报, 2026, 46(3): 787-797.
Yunfeng XU, Kaiyuan CHENG, Feng HUANG, Baoqi YANG, Xianglong CHENG, Qifei ZAN, Zhixian PENG, Jing LIU. Effect of Hydrogen Pre-charging Time on Hydrogen Embrittlement Susceptibility in High Pressure Hydrogen Environment for Two Seamless Steel Pipe Steels with Different Microstructures[J]. Journal of Chinese Society for Corrosion and protection, 2026, 46(3): 787-797.

全文: PDF(29981 KB) HTML

摘要:

采用慢应变速率拉伸(SSRT)实验和场发射扫描电子显微镜(FE-SEM)探究了预充氢时间(1、6、12和24 h)对X42QS与X65QS两种不同显微组织无缝管钢在10 MPa高压氢环境中氢脆敏感性的影响及机理。结果表明，预充氢时间会显著影响钢氢脆敏感性和断裂机制，且显微组织不同，影响程度和机制也不同。具有珠光体/铁素体组织的X42QS钢组织不均匀且夹杂物数量多，其氢脆敏感性随预充氢时间先快速升高，12 h时达13.70%，后变化逐渐平缓，氢脆机制由短时氢增强局部塑性主导，而长时预充氢则过渡到其与氢致解理的协同作用。具有贝氏体/针状铁素体组织的X65QS钢氢脆敏感性随预充氢时长的延长增长平缓，24 h时仅升至7.0%，氢增强局部塑性机制全程主导，断口始终以韧性断裂形貌为主。综合考虑，预充氢时间以12 h为宜。

关键词 ：无缝钢管钢, 预充氢时间, 氢脆, 氢增强局部塑性, 氢致解理

Abstract：

The effect of pre-charging hydrogen time (1, 6, 12 and 24 h) on the hydrogen embrittlement susceptibility of two seamless pipe steels X42QS and X65QS with different microstructures in a 10 MPa high-pressure hydrogen environment was studied by means of slow strain rate tensile (SSRT) testing and field emission scanning electron microscope (FE-SEM). The results indicated that the pre-charging hydrogen time significantly affected the hydrogen embrittlement susceptibility and the corresponding fracture mechanism, while the influence extent and mechanism varied depending on the difference in microstructure. The pearlite/ferrite microstructure of X42QS steel is non uniform while contains a large number of inclusions. Its hydrogen embrittlement susceptibility increased rapidly with the increasing pre-charging hydrogen time, reaching 13.70% at 12 h, and then gradually slows down. The hydrogen embrittlement mechanism was dominated by hydrogen-enhanced local plasticity (HELP) for the short-term, transitioning to hydrogen-enhanced decohesion (HEDE) synergistic effect for the long-term; The hydrogen embrittlement susceptibility of X65QS steel with bainite/acicular ferrite microstructure increased gradually as the pre-charging hydrogen time increases, it only rose to 7.0% at 24 h. The mechanism of HELP dominated throughout the entire process, and the fracture always presented a ductile fracture morphology. Considering all the factors, the pre-charging hydrogen time may preferably be 12 h for detecting the influence of hydrogen on the mechanical property of steels.

Key words： seamless steel pipes pre-charging hydrogen hydrogen embrittlement hydrogen-enhanced local plasticity hydrogen-enhanced decohesion

收稿日期: 2025-06-12 32134.14.1005.4537.2025.179

ZTFLH:

TG174

基金资助:国家自然科学基金(U21A20113);国家自然科学基金(52231003);湖北省中央引导地方科技发展专项(2023CGB004)

通讯作者: 黄峰，E-mail：huangfeng@wust.edu.cn，研究方向为高性能钢铁材料及服役安全

Corresponding author: HUANG Feng, E-mail: huangfeng@wust.edu.cn

作者简介: 徐云峰，男，1999年生，博士生

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https://www.jcscp.org/CN/10.11902/1005.4537.2025.179 或 https://www.jcscp.org/CN/Y2026/V46/I3/787

表1 实验用钢的主要化学成分

图1 金相及拉伸试样取样位置

图2 拉伸试样尺寸图

图3 X42QS和X65QS钢的FE-SEM显微组织照片

图4 X42QS和X65QS钢夹杂物形貌和成分分布结果

图5 X42QS和X65QS钢夹杂物定量统计图

图6 X42QS和X65QS钢不同预充氢时间后的应力-应变曲线

图7 两种钢在不同预充氢时长后的氢脆敏感性

图8 不同预充氢时间后两种钢的抗拉强度

图9 不同预充氢时间后X42QS钢试样的断口形貌及特征区域图像

图10 不同预充氢时间后X65QS钢试样的断口形貌及特征区域图像

图11 10 MPa高压预充氢24 h后两种钢的裂纹结果：

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