输氢管道氢脆研究现状及进展

Research status and progress of hydrogen embrittlement of hydrogen pipelines

管道输氢在实现氢能产业发展、促进能源高效利用中具有极高的经济价值,是加速实现能源转型战略的重要一环,而氢与钢质管道的相容性评价是管道输氢安全应用的前提。氢进入材料后引发的氢脆给管道安全输氢带来了极大的挑战,但氢脆机理尚未形成统一的共识,也缺乏行之有效的防护方法。钢质管道材料氢脆行为研究能够直观给出氢进入材料后导致的力学性能变化规律,在机理研究及工程应用中均具有重要的意义。从输氢管道材料、氢脆机理、氢脆行为研究方法及影响因素等方面总结了输氢管道氢脆研究现状,从实验方法及条件与材料微观组织两个方面阐述了其对输氢管道材料氢脆行为的影响,探讨了当前所采用实验方法及结果的合理性,并提出了未来工作中需加以关注的研究方向。

Hydrogen transportation through pipelines has extremely high economic value in realizing the development of the hydrogen energy industry and promoting efficient energy utilization. It is an important link to accelerate the realization of the energy transformation strategy. The evaluation of the compatibility of hydrogen with steel pipelines is the premise of the safe application of hydrogen transportation through pipelines. The hydrogen embrittlement caused by hydrogen entering the material has brought great challenges to safe hydrogen transportation through pipelines. However, no consensus has been formed regarding the mechanism of hydrogen embrittlement, and no effective protection method is available against hydrogen embrittlement. The study on hydrogen embrittlement of steel pipeline materials intuitively exhibits the mechanical property change law caused by hydrogen entering the material, which is of great significance in mechanism research and engineering application. Herein, the research status of hydrogen embrittlement in hydrogen pipelines was summarized from the aspects of materials for hydrogen pipelines, mechanism of hydrogen embrittlement, research methods of hydrogen embrittlement and its influencing factors. Besides, their influence on hydrogen embrittlement behavior in the materials for hydrogen pipelines was elaborated in view of the experimental methods, conditions and material microstructure. In addition, the rationality of current experimental methods and results were discussed, and the research directions to be concerned in future work were put forward.