Stress corrosion behavior of X80 pipeline steel in natural seawater with different dissolved oxygen
Slow strain rate stress corrosion test of X80 steel in the natural seawater are carried out to study to effect of dissolved oxygen on the sensitivity of stress corrosion. Scanning electron microscope (SEM) combined electrochemical measurement are adopted to analyze mechanism and the influencing fact...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2019-07-01
|
| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2478 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850056553238888448 |
|---|---|
| author | Xiaoguang Huang Zhongying Han |
| author_facet | Xiaoguang Huang Zhongying Han |
| author_sort | Xiaoguang Huang |
| collection | DOAJ |
| description | Slow strain rate stress corrosion test of X80 steel in the natural seawater are carried out to study to effect of dissolved oxygen on the sensitivity of stress corrosion. Scanning electron microscope (SEM) combined electrochemical measurement are adopted to analyze mechanism and the influencing factor of stress corrosion cracking. The results show that the sensitivity of SCC in the natural seawater increases, and the stress corrosion cracking gradually transforms from ductile to quasi-brittle fracture, with the increase of dissolved oxygen. Tafle polarization and electrochemical impedance spectroscopy of X80 show that dissolved oxygen aggravates electrochemical corrosion and reduces corrosion resistance. Corrosion pits and micro cracks at the lateral and fracture surface trigger stress concentration and promote anodic dissolution under stress, thereby accelerate the process of stress corrosion cracking of X80 steel in the seawater. |
| format | Article |
| id | doaj-art-b28c0bf4c73e48b096ca837bf955962b |
| institution | DOAJ |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-b28c0bf4c73e48b096ca837bf955962b2025-08-20T02:51:39ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-07-011350Stress corrosion behavior of X80 pipeline steel in natural seawater with different dissolved oxygenXiaoguang Huang0Zhongying HanChina University of Petroleum(East China)Slow strain rate stress corrosion test of X80 steel in the natural seawater are carried out to study to effect of dissolved oxygen on the sensitivity of stress corrosion. Scanning electron microscope (SEM) combined electrochemical measurement are adopted to analyze mechanism and the influencing factor of stress corrosion cracking. The results show that the sensitivity of SCC in the natural seawater increases, and the stress corrosion cracking gradually transforms from ductile to quasi-brittle fracture, with the increase of dissolved oxygen. Tafle polarization and electrochemical impedance spectroscopy of X80 show that dissolved oxygen aggravates electrochemical corrosion and reduces corrosion resistance. Corrosion pits and micro cracks at the lateral and fracture surface trigger stress concentration and promote anodic dissolution under stress, thereby accelerate the process of stress corrosion cracking of X80 steel in the seawater.https://www.fracturae.com/index.php/fis/article/view/2478Stress corrosionDissolved oxygenSensitivityStress concentrationAnodic dissolution |
| spellingShingle | Xiaoguang Huang Zhongying Han Stress corrosion behavior of X80 pipeline steel in natural seawater with different dissolved oxygen Fracture and Structural Integrity Stress corrosion Dissolved oxygen Sensitivity Stress concentration Anodic dissolution |
| title | Stress corrosion behavior of X80 pipeline steel in natural seawater with different dissolved oxygen |
| title_full | Stress corrosion behavior of X80 pipeline steel in natural seawater with different dissolved oxygen |
| title_fullStr | Stress corrosion behavior of X80 pipeline steel in natural seawater with different dissolved oxygen |
| title_full_unstemmed | Stress corrosion behavior of X80 pipeline steel in natural seawater with different dissolved oxygen |
| title_short | Stress corrosion behavior of X80 pipeline steel in natural seawater with different dissolved oxygen |
| title_sort | stress corrosion behavior of x80 pipeline steel in natural seawater with different dissolved oxygen |
| topic | Stress corrosion Dissolved oxygen Sensitivity Stress concentration Anodic dissolution |
| url | https://www.fracturae.com/index.php/fis/article/view/2478 |
| work_keys_str_mv | AT xiaoguanghuang stresscorrosionbehaviorofx80pipelinesteelinnaturalseawaterwithdifferentdissolvedoxygen AT zhongyinghan stresscorrosionbehaviorofx80pipelinesteelinnaturalseawaterwithdifferentdissolvedoxygen |