为评估氢脆风险，研究人员对含三角形缺口的API 5L X52管线钢开展了应力辅助与非应力辅助氢扩散的耦合数值模拟研究。结果表明，机械应力是氢在缺口尖端显著积聚（浓度可达12.613 mol/m3）的主要驱动力，而忽略应力效应会严重低估氢积累。该研究为氢能管道 ...

氢致开裂（HIC）对API 5L管线钢在含H2S环境中服役的威胁及机制、影响因素、检测技术及缓解策略的系统综述，提出基于材料设计与表面工程的综合缓解方案。 氢致裂纹（HIC）对碳钢管道及压力容器的影响机制与防控策略研究 一、研究背景与问题重要性 在油气 ...

The API 5L standard is the international standard for line pipe in oil and gas industry. Among all grades, API 5L X42 (also known as L290 in the metric system) is a significant jump up from the ...

Pipeline integrity is a major financial and environmental concern for the oil and gas sector. The American Petroleum Institute (API) Specification 5L is the internationally recognized standard for ...