A Study on Stress Corrosion Cracking of X70 Pipeline Steel in Carbonate Solution by EIS

被引：8
|
作者：
Shahriari, A. [1 ]
Shahrabi, T. [1 ]
Oskuie, A. A. [1 ]
机构：
[1] Tarbiat Modares Univ, Dept Mat Sci & Engn, Fac Engn, Tehran, Iran
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2013年 / 22卷 / 05期
关键词：
carbon/alloy steel; corrosion testing; mechanical testing; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; PASSIVE LAYER CRACKING; BEHAVIOR; MACROSEGREGATION; MICROSTRUCTURE; SCC;
D O I：
10.1007/s11665-012-0418-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, electrochemical impedance spectroscopy (EIS) simultaneously with the slow strain rate testing were used to investigate the stress corrosion cracking (SCC) behavior of X70 pipeline steel in high pH bicarbonate solution at different applied potentials. Potentiostatic EIS tests were also conducted at certain times to determine the changes associated with the SCC. Circuit models for the cracking were proposed by the use of the potentiostatic EIS measurements at different applied potentials. Finally, the results of the potentiostatic EIS tests and the SSR tests showed the decline of the circuit element resistance by increasing the stress which was related to the cracking. It was also observed that the X70 pipeline steel was most susceptible to SCC at potential of -650 mV versus SCE.
引用
收藏
页码：1459 / 1470
页数：12
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