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首页> 外文期刊>Journal of Corrosion Science and Engineering >(v14preprint43)Susceptibility of Pipeline Girth Welds to Hydrogen Embrittlement and Sulphide Stress Corrosion Cracking
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(v14preprint43)Susceptibility of Pipeline Girth Welds to Hydrogen Embrittlement and Sulphide Stress Corrosion Cracking

机译：（v14preprint43）管道围焊缝对氢脆和硫化物应力腐蚀开裂的敏感性

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摘要

The susceptibility of girth welds to Sulphide Stress Corrosion Cracking (SSCC) and Hydrogen Embrittlement (HE) were evaluated for API grade X80 and X56 steels, both for similar (X80/X80) and dissimilar (X80/X56) joints. Slow strain rate (SSR) and Hydrogen Permeation tests were performed at room temperature using sodium thiosulphate solutions at different pH levels. The SSR tests showed that the majority of the welded joints studied, though approved by the API 1104 standard?s criteria, did in fact suffer a reduction in ductility and showed indications of susceptibility to sulphide stress corrosion cracking and to hydrogen embrittlement in the form of secondary longitudinal and internal transverse cracks. This was true regardless the welding process used.
机译：对API级X80和X56钢（相似（X80 / X80）和异种（X80 / X56）接头）评估了环缝焊缝对硫化物应力腐蚀开裂（SSCC）和氢脆（HE）的敏感性。慢应变速率（SSR）和氢渗透测试是在室温下使用不同pH值的硫代硫酸钠溶液进行的。 SSR测试表明，尽管已通过API 1104标准的标准认可，但所研究的大多数焊接接头的确延展性降低，并以硫化物应力腐蚀开裂和氢脆的形式显示出易感性。次要的纵向和内部横向裂纹。无论使用哪种焊接工艺，都是如此。

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