摘要
采用NACE TM0284-2003中A和B两种溶液对低碳和超低碳管线钢进行了腐蚀试验,并对试验结果和影响氢致开裂(HIC)敏感性的因素进行了分析。结果表明,试验钢均具有良好的抗HIC性能,合理控制成分中的C、Mn、P、S等元素含量是保证抗腐蚀性能的关键;同时,钢中的夹杂物、偏析和带状组织均会使材料的HIC敏感性增大,而以铁素体为主的细晶组织和组织中的大量位错对提高抗HIC性能起到了重要作用。
The corrosion resistance of pipeline steels becomes more and more important with development of oil and gas industry. Test low carbon and ultra-low carbon pipeline steels were corroded by the solutions of NACE TM0284—2003 A and B, the experimental results and the influence factors on HIC sensibility were analyzed. It is shown that all of the test steels have fine corrosion resistance. The contents of C, Mn, P and S etc. are the key to assure corrosion resistance. The inclusion, segregation and banded structure in the steels increase HIC sensibility, while the fine-grain structure composed mainly of ferrite and dislocations advances corrosion resistance obviously.
出处
《腐蚀与防护》
CAS
北大核心
2012年第12期1098-1101,共4页
Corrosion & Protection
关键词
HIC
管线钢
偏析
组织
位错
hydrogen induced cracking （HIC）
pipeline steel
segregation
microstructure
dislocation
