X80级管线钢抗氢致开裂性能研究
Investigation on Anti-hydrogen Induced Cracking Properties of X80 Pipeline Steel
崔海伟, 蔡庆伍, 武会宾, 刘洪群
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作者单位：北京科技大学 高效轧制国家工程研究中心, 北京 100083
中文关键字：管线钢； 氢致开裂； 裂纹； 氢鼓泡
英文关键字：pipeline steel; hydrogen induced cracking; cracking; hydrogen blister
中文摘要：采用NACE standard TM 0284-2003氢致开裂标准实验方法，研究了鞍钢生产的X80级管线钢分别在两种溶液中的抗氢致开裂性能。研究结果表明：该管线钢在两种溶液中均具有较好的抗氢致开裂性能,试样内部没有发现裂纹；试样表面的微裂纹主要在点蚀坑处形核并沿多边形铁素体扩展，扩展模式多为穿晶型，并终止于针状铁素体。
英文摘要：Using NACE TM 0284-2003 standard，the behavior of anti-hydrogen induced cracking of X80 pipeline steel in different solution was investigated. The results show that the steel in different solution has better performance of anti-hydrogen induced cracking，there is no cracking inside the steel; micro-cracking on the specimen surface mainly nucleates at pitting corrosion pits and expands along the polygonal ferrite; the expansion mode is mostly transgranular type, and the expansion terminates in acicular ferrite.