Abstract: Based on the analysis of the key influencing factors of H2S corrosion resistant steel plate ( wass fraction/% ：0.16C,0.32Si,1.25Mn,0.018Al,0.0007S,0.007P) in failure process,the mechanism of H₂S corrosion failure and the method of improving the corrosion resistance of H₂S are illustrated by comparing the influence of inclusion and banded structure on H₂S corrosion performance. The results show that MnS inclusion and continuous banded structure are the key factors that lead to the corrosion cracking of H₂S, and the HIC corrosion performance can be obviously improved as the banded structure is changed by continuous-intermittent twice 880 ℃ as 60 min normalized treatment and the Length crack sensitivity is 0.

摘要： 针对抗H2S腐蚀钢板（质量分数/%:0.16C,0.32Si,1.25Mn,0.018AI,0.000 7S,0.007P）在失效过程的关键影响因素进行分析,通过对比夹杂物和带状组织对H₂S腐蚀（HIC）性能的影响,阐明了H2S腐蚀失效机理以及改善抗H₂S腐蚀性能的方法。结果表明,MnS夹杂物和连续的带状组织是导致H₂S腐蚀裂纹的关键因素,通过两次880℃保温60 min正火处理,可使带状组织由连续变为断续,抗HIC性能会明显改善,长度裂纹敏感率为0

关键词: H₂S, MnS夹杂, 带状组织, 正火处理