The Pitting Corrosion Behavior of the Austenitic Stainless Steel 308L-316L Welded Joint
The pitting corrosion resistance of the austenitic stainless steel 308L-316L welded joint was investigated by electrochemical tests. It is found that the weld zone was the most critical for pits to initiate in the welded joint due to relatively instable passive film with few Mo and inhomogeneous pas...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-09-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/9/1258 |
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| author | Jinshan He Shiguang Xu Wenxin Ti Yaolei Han Jinna Mei Xitao Wang |
| author_facet | Jinshan He Shiguang Xu Wenxin Ti Yaolei Han Jinna Mei Xitao Wang |
| author_sort | Jinshan He |
| collection | DOAJ |
| description | The pitting corrosion resistance of the austenitic stainless steel 308L-316L welded joint was investigated by electrochemical tests. It is found that the weld zone was the most critical for pits to initiate in the welded joint due to relatively instable passive film with few Mo and inhomogeneous passive film induced by multiple (Mn, Al, and Si) oxides and continuous network of 13.94 vol.% δ ferrites. By statistical analysis, 53.8% pits initiated at (Mn, Al, and Si) oxides, 23.0% in austenite, and 23.2% at interface between ferrite and austenite. In addition, heat-affected zone was prone to have pitting corrosion compared with the base metal since residual strain was much higher in the region. |
| first_indexed | 2024-03-10T16:14:13Z |
| format | Article |
| id | doaj.art-1557020e24d34927b82795affea3603b |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T16:14:13Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-1557020e24d34927b82795affea3603b2023-11-20T14:09:04ZengMDPI AGMetals2075-47012020-09-01109125810.3390/met10091258The Pitting Corrosion Behavior of the Austenitic Stainless Steel 308L-316L Welded JointJinshan He0Shiguang Xu1Wenxin Ti2Yaolei Han3Jinna Mei4Xitao Wang5Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, ChinaSuzhou Nuclear Power Research Institute, Suzhou 215004, ChinaSuzhou Nuclear Power Research Institute, Suzhou 215004, ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, ChinaThe pitting corrosion resistance of the austenitic stainless steel 308L-316L welded joint was investigated by electrochemical tests. It is found that the weld zone was the most critical for pits to initiate in the welded joint due to relatively instable passive film with few Mo and inhomogeneous passive film induced by multiple (Mn, Al, and Si) oxides and continuous network of 13.94 vol.% δ ferrites. By statistical analysis, 53.8% pits initiated at (Mn, Al, and Si) oxides, 23.0% in austenite, and 23.2% at interface between ferrite and austenite. In addition, heat-affected zone was prone to have pitting corrosion compared with the base metal since residual strain was much higher in the region.https://www.mdpi.com/2075-4701/10/9/1258308L-316L welded jointmicrostructurepitting corrosionresidual strain |
| spellingShingle | Jinshan He Shiguang Xu Wenxin Ti Yaolei Han Jinna Mei Xitao Wang The Pitting Corrosion Behavior of the Austenitic Stainless Steel 308L-316L Welded Joint Metals 308L-316L welded joint microstructure pitting corrosion residual strain |
| title | The Pitting Corrosion Behavior of the Austenitic Stainless Steel 308L-316L Welded Joint |
| title_full | The Pitting Corrosion Behavior of the Austenitic Stainless Steel 308L-316L Welded Joint |
| title_fullStr | The Pitting Corrosion Behavior of the Austenitic Stainless Steel 308L-316L Welded Joint |
| title_full_unstemmed | The Pitting Corrosion Behavior of the Austenitic Stainless Steel 308L-316L Welded Joint |
| title_short | The Pitting Corrosion Behavior of the Austenitic Stainless Steel 308L-316L Welded Joint |
| title_sort | pitting corrosion behavior of the austenitic stainless steel 308l 316l welded joint |
| topic | 308L-316L welded joint microstructure pitting corrosion residual strain |
| url | https://www.mdpi.com/2075-4701/10/9/1258 |
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