Hydrogen effects on X80 pipeline steel in high-pressure natural gas/hydrogen mixtures
Hydrogen effects on X80 pipeline steel in high-pressure natural gas/hydrogen mixtures
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DOI：
10.1016/j.ijhydene.2016.05.145
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发表时间：
2017-03
影响因子：
7.2
通讯作者：
B. Meng;C. Gu;Lin Zhang;Chengshuang Zhou;Xiong-Ying Li;Yongzhi Zhao;Jinyang Zheng;Xingyang Chen;Yongxiang Han
中科院分区：
文献类型：
--
作者：
B. Meng;C. Gu;Lin Zhang;Chengshuang Zhou;Xiong-Ying Li;Yongzhi Zhao;Jinyang Zheng;Xingyang Chen;Yongxiang Han
有人提议将氢气混合到现有的天然气管道中，作为增加大型风电场等可再生能源系统产量的一种手段。 X80管线钢通常用于输送天然气，这种钢在直接暴露于含氢环境的同时，会受到机械载荷的同时氢侵入，导致氢脆（HE）。根据美国材料与试验协会（ASTM）标准，X80管线钢的力学性能在12MPa压力下含0、5.0、10.0、20.0和50.0vol%氢气的天然气/氢气混合物中进行了测试。结果表明，X80管线钢在天然气/氢气混合物中容易发生氢致脆，且氢脆敏感性随着氢分压的增加而增加。此外，HE敏感性取决于热轧引起的织构微观结构，特别是对于缺口试样。根据实测疲劳数据进行设计计算表明，X80钢管道的疲劳寿命因氢的添加而显着降低。
Blending hydrogen into existing natural gas pipelines has been proposed as a means of increasing the output of renewable energy systems such as large wind farms. X80 pipeline steel is commonly used for transporting natural gas and such steel is subjected to concurrent hydrogen invasion with mechanical loading while being exposed to hydrogen containing environments directly, resulting in hydrogen embrittlement (HE). In accordance with American Society for Testing and Materials (ASTM) standards, the mechanical properties of X80 pipeline steel have been tested in natural gas/hydrogen mixtures with 0, 5.0, 10.0, 20.0 and 50.0vol% hydrogen at the pressure of 12 MPa. Results indicate that X80 pipeline steel is susceptible to hydrogen-induced embrittlement in natural gas/hydrogen mixtures and the HE susceptibility increases with the hydrogen partial pressure. Additionally, the HE susceptibility depends on the textured microstructure caused by hot rolling, especially for the notch specimen. The design calculation by the measured fatigue data reveals that the fatigue life of the X80 steel pipeline is dramatically degraded by the added hydrogen.