STRESS CORROSION CRACKING BEHAVIOR OF PIPELINE STEEL X60 IN NEAR-NEUTRAL PH SOIL ENVIRONMENTS AROUND SHANGHAI

摘要：

Near-neutral pH stress corrosion cracking (SCC) behavior of pipeline steel X60 in typical soil environments around Shanghai has been investigated for structural integrity assessment. The effects of soil type and electrode potential from cathodic protection point were evaluated through slow strain rate tests (SSRT) at various electrode potentials in three solutions containing different typical soils. Results showed that the SCC susceptibility generally increased with decreasing electrode potential in all the three environments, with quick increase happening in the range of -1200 ～ -700mV(SCE). It is suggested that hydrogen induced cracking should dominate the SCC at low potentials. In cathodic potential range, the rank of the SCC susceptibility for soil type was Near-city soil > Cyan-purple soil > Cyan-yellow soil. In anodic potential range, SCC susceptibility curves mixed each other in the three solutions.

作者: G. F. Li G.L. Zhang C.B. Huang W. YANG Z.H. Sun D.F. Yan J.H. Fang

作者单位: Materials-Corrosion Lab, Shanghai Research Institute of Materials, 99 Handan Rd., Shanghai 200437, C Shanghai Natural Gas Pipeline Network Company LTD, 5678 West Huaxia Road, Shanghai 201204, China

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）