Effect of AC on stress corrosion cracking behavior and mechanism of X80 pipeline steel in carbonate/bicarbonate solution |
| |
| Affiliation: | 1. University Ammar Thelidji of Laghouat, BP 37G, 03000 Laghouat, Algeria;2. University of Saâd Dahleb Blida, BP 270, Route de Soumaâ, Blida 09000, Algeria;3. Welding and Control Research Center, CSC Cheraga, Route de dely-brahim, Alger 16000, Algeria;1. Environmental Corrosion Center, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;2. School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China;3. Key Laboratory of Materials Design and Preparation Technology of Hunan Province, Xiangtan University, Xiangtan 411105, China;4. Oil-Gas Storage and Transportation Company of Xinjiang Oilfield Branch, Karamay 834002, China;1. Department of Aerospace Engineering, Iowa State University, Ames, IA, 50011, United States;2. Department of Mechanical Engineering, Iowa State University, Ames, IA, 50011, United States;3. Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, 50011, United States |
| |
| Abstract: | The influence of various AC current densities on stress corrosion cracking behavior and mechanism of X80 pipeline steel was investigated in carbonate/bicarbonate solution by polarization curves and slow strain rate tensile tests. With the increasing AC current density, the SCC susceptibility of the steel increases, especially at high AC current density. A significant difference in the SCC behavior and mechanism is found for the steels with or without AC application. In the absence of AC, the fracture mode is intergranular and the mechanism is attributed to anodic dissolution. Under AC application, the cracks propagation is transgranular, and the mechanism is mixed controlled by both anodic dissolution and hydrogen embrittlement. |
| |
| Keywords: | A Steel B SEM B Polarization C Stress corrosion |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
