依据NACE TM 0284-2003标准比较了X80和X120管线钢的氢致开裂(HIC)敏感性,采用光学显微镜、扫描电镜观察了裂纹扩展形貌,分析了裂纹扩展与管线钢微观结构之间的关系,依据氢渗透试验结果讨论了管线钢微观组织对氢原子捕捉能力的影响.结果表明,具有针状铁素体组织的X80钢的抗HIC敏感性高于含超低碳贝氏体组织的X120钢;X80钢中HIC裂纹主要沿着多边形铁素体(PF)扩展,X120钢中的HIC裂纹主要沿着原奥氏体晶界扩展;以板条贝氏体为主的X120管线钢对氢原子的捕获能力大于以针状铁素体为主的X80管线钢.
参考文献
[1] | D. Hardie;E.A. Charles;A.H. Lopez .Hydrogen embrittlement of high strength pipeline steels[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2006(12):4378-4385. |
[2] | H.B. Xue;Y.F.Cheng .Characterization of inclusions of X80 pipeline steel and its correlation with hydrogen-induced cracking[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2011(4):1201-1208. |
[3] | Wan Keun Kim;Seong Ung Koh;Boo Young Yang;Kyoo Young Kim .Effect Of Environmental And Metallurgical Factors On Hydrogen Induced Cracking Of Hsla Steels[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2008(12):3336-3342. |
[4] | Huang, F.;Liu, J.;Deng, Z.J.;Cheng, J.H.;Lu, Z.H.;Li, X.G. .Effect of microstructure and inclusions on hydrogen induced cracking susceptibility and hydrogen trapping efficiency of X120 pipeline steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2010(27/28):6997-7001. |
[5] | Gyu Tae Park;Sung Ung Koh;Hwan Gyo Jung;Kyoo Young Kim .Effect of microstructure on the hydrogen trapping efficiency and hydrogen induced cracking of linepipe steel[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2008(7):1865-1871. |
[6] | Arafin, M.A.;Szpunar, J.A. .Effect of bainitic microstructure on the susceptibility of pipeline steels to hydrogen induced cracking[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2011(15):4927-4940. |
[7] | 曲炎淼 .X80管线钢焊接热影响区氢致裂纹行为研究[D].武汉科技大学,2010. |
[8] | 程吉浩,刘静,黄峰,孙宜强,邓照军.贝氏体组织管线钢的氢致开裂行为[J].腐蚀与防护,2010(11):833-836. |
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