20^#钢弯管H2S腐蚀程度评价研究

Evaluation Research of H2S Corrosion Resistance for 20^# Steel Bent Pipe

文章对服役于某天然气井的20^#钢弯管进行了成分、组织、力学性能及腐蚀产物分析，并与未服役的20^#钢弯管进行了对比，评价研究了其抗H2S腐蚀的程度。研究结果表明：20^#钢弯管发生了H2S腐蚀，但并没有引起氢致损伤；H2S腐蚀后，腐蚀区域硬度降低，塑性下降。

This paper analyzed the composition, microstructure, mechanical property and corrosion scale of 20# bent pipe used in the natural gas, and contrasted with the new 20^# bent pipe, studied the resistant to H2S corrosion of 20^# bent pipe. The research results indicate that the 20^# bent pipe occurs H2 S corrosion, while hydrogen induced damage does not happen. The hardness and plasticity of corrosion region decrease due to H2 S corrosion.