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[1]王宇辰 吴倩 刘欢 康泽天. 管线钢氢相容性测试方法及氢脆防控研究进展[J].油气储运,2023,42(10):1-11.
　WANG Yuchen,WU Qian,LIU Huan,et al.Research Progress of Pipeline Steel Hydrogen Compatibility Testing and Embrittlement Prevention Technology[J].Oil & Gas Storage and Transportation,2023,42(10):1-11.
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管线钢氢相容性测试方法及氢脆防控研究进展

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 42 期数: 2023年10期 页码: 1-11 栏目: 出版日期: 2023-10-25
Title:
Research Progress of Pipeline Steel Hydrogen Compatibility Testing and Embrittlement Prevention Technology
作者:
王宇辰 吴倩 刘欢 康泽天
Author(s):
关键词:
Keywords:
分类号:
TB31
文献标志码:
A
摘要:

在研究氢脆发生机理及损伤机制时，常采用慢应变速率拉伸试验、疲劳寿命试验等手段，以力学性能、疲劳寿命等为指标衡量金属的氢脆敏感性。对于典型管线钢材料，其在不足5 MPa的氢气压力下，或在氢气体积分数10%的掺氢天然气环境中，就已在慢应变速率拉伸等试验中表现出明显的韧性下降、裂纹加速扩展等氢损伤特征。为模拟钢在氢气环境中服役，试验中常采用气相充氢及电化学充氢方法，前者能够模拟多种气相对管线钢氢脆的作用，后者能够快速模拟管线钢长时间服役后氢原子的渗透情况。针对氢脆过程及机理总结并分析了3种主要的氢脆防控技术：①调控管线钢材料及加工工艺，优化其微观组织，增加扩散速率，减弱氢原子聚集现象；②引入气体抑制剂，通过竞争吸附的方法减缓氢分子在材料表面的吸附；③增设管道内涂层，使氢气和管线钢基体金属隔离。并基于此提出了进一步优化管道氢脆防控技术的建议。

Abstract:

In view of damage caused by hydrogen embrittlement, some performances of the pipeline steel such as mechanical properties and fatigue life are used as indexes to measure the hydrogen embrittlement sensitivity of metals through slow strain rate tensile test and fatigue life test. For typical pipeline steels, there are obvious damage features caused by hydrogen such as toughness reduction and fracture propagation when hydrogen pressure ≤5 MPa, or the volume of hydrogen in H2-doped natural gas accounts for 10 vol.%. Two common charging method for hydrogen compatibility test, namely gas-phase and electrochemical charging, are compared in this paper. The former can simulate the effect of various gas phases on pipeline steels, and the latter can quickly obtain the penetration situation of hydrogen atoms after long-term service of pipeline steel. Main hydrogen embrittlement prevention technologies are summarized in this paper: (1) Control material and processing technology of pipeline steel and optimize the microstructure; (2) introduce gas inhibitors, retard the attachment of hydrogen molecules on the steel surface through the mechanical of competitive adsorption; (3) add pipeline internal coating, isolate hydrogen and pipeline steel matrix.

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更新日期/Last Update: 2023-07-06