The Effect of Atmospheric Chloride Ions on the Corrosion Fatigue of Metal Wire Clips in Power Grids
Corrosion fatigue is an important factor that limits the life of grid materials including wire clips. In order to study the effect of corrosion fatigue and to select suitable grid steels, this paper focuses on the corrosion fatigue properties of Q235 carbon steel, Q235 galvanized steel, and 316L sta...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/14/2/237 |
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| author | Yifeng Zhang Wei Chen Hanbing Yan Xuefeng Wang Hanping Zhang Shijing Wu |
| author_facet | Yifeng Zhang Wei Chen Hanbing Yan Xuefeng Wang Hanping Zhang Shijing Wu |
| author_sort | Yifeng Zhang |
| collection | DOAJ |
| description | Corrosion fatigue is an important factor that limits the life of grid materials including wire clips. In order to study the effect of corrosion fatigue and to select suitable grid steels, this paper focuses on the corrosion fatigue properties of Q235 carbon steel, Q235 galvanized steel, and 316L stainless steel in the corrosive environments of air, 2wt% NaCl, 5wt% NaCl, and 8wt% NaCl. Through the fatigue test in the corrosive environment, and the surface morphology scanning and microstructure observation of the fracture, the following conclusions are drawn: the three materials are more susceptible to corrosion fatigue in the Cl<sup>−</sup> environment, and the higher the Cl<sup>−</sup> concentration, the greater the likelihood of fracture caused by corrosion fatigue for these three materials. By analyzing the surface roughness, dimples, and cracks in the microstructure, it is found that 316L stainless steel is highly sensitive to Cl<sup>−</sup> corrosion under cyclic stress, and Q235 galvanized steel is more resistant to Cl<sup>−</sup>. By plotting the stress fatigue life curve of Q235 galvanized steel, it is found that the corrosion fatigue life decreases as the Cl<sup>−</sup> concentration increases. For wire clips in areas with severe Cl<sup>−</sup> pollution, Q235 galvanized steel should be selected to achieve the best anti-corrosion fatigue effect; at the same time, the original parts should be repaired or replaced in a timely manner based on the predicted corrosion fatigue life. |
| first_indexed | 2024-03-11T09:11:21Z |
| format | Article |
| id | doaj.art-c5139f460dff4e9dac1e73928f9809ca |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-11T09:11:21Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-c5139f460dff4e9dac1e73928f9809ca2023-11-16T19:02:00ZengMDPI AGAtmosphere2073-44332023-01-0114223710.3390/atmos14020237The Effect of Atmospheric Chloride Ions on the Corrosion Fatigue of Metal Wire Clips in Power GridsYifeng Zhang0Wei Chen1Hanbing Yan2Xuefeng Wang3Hanping Zhang4Shijing Wu5Electric Power Research Institute of State Grid Shanxi Electric Power Company, Taiyuan 030029, ChinaThe Institute of Technological Sciences, Wuhan University, Wuhan 430072, ChinaElectric Power Research Institute of State Grid Shanxi Electric Power Company, Taiyuan 030029, ChinaElectric Power Research Institute of State Grid Shanxi Electric Power Company, Taiyuan 030029, ChinaElectric Power Research Institute of State Grid Shanxi Electric Power Company, Taiyuan 030029, ChinaThe Institute of Technological Sciences, Wuhan University, Wuhan 430072, ChinaCorrosion fatigue is an important factor that limits the life of grid materials including wire clips. In order to study the effect of corrosion fatigue and to select suitable grid steels, this paper focuses on the corrosion fatigue properties of Q235 carbon steel, Q235 galvanized steel, and 316L stainless steel in the corrosive environments of air, 2wt% NaCl, 5wt% NaCl, and 8wt% NaCl. Through the fatigue test in the corrosive environment, and the surface morphology scanning and microstructure observation of the fracture, the following conclusions are drawn: the three materials are more susceptible to corrosion fatigue in the Cl<sup>−</sup> environment, and the higher the Cl<sup>−</sup> concentration, the greater the likelihood of fracture caused by corrosion fatigue for these three materials. By analyzing the surface roughness, dimples, and cracks in the microstructure, it is found that 316L stainless steel is highly sensitive to Cl<sup>−</sup> corrosion under cyclic stress, and Q235 galvanized steel is more resistant to Cl<sup>−</sup>. By plotting the stress fatigue life curve of Q235 galvanized steel, it is found that the corrosion fatigue life decreases as the Cl<sup>−</sup> concentration increases. For wire clips in areas with severe Cl<sup>−</sup> pollution, Q235 galvanized steel should be selected to achieve the best anti-corrosion fatigue effect; at the same time, the original parts should be repaired or replaced in a timely manner based on the predicted corrosion fatigue life.https://www.mdpi.com/2073-4433/14/2/237corrosion fatiguechloride ionssteel fatiguewire clipspower grids |
| spellingShingle | Yifeng Zhang Wei Chen Hanbing Yan Xuefeng Wang Hanping Zhang Shijing Wu The Effect of Atmospheric Chloride Ions on the Corrosion Fatigue of Metal Wire Clips in Power Grids Atmosphere corrosion fatigue chloride ions steel fatigue wire clips power grids |
| title | The Effect of Atmospheric Chloride Ions on the Corrosion Fatigue of Metal Wire Clips in Power Grids |
| title_full | The Effect of Atmospheric Chloride Ions on the Corrosion Fatigue of Metal Wire Clips in Power Grids |
| title_fullStr | The Effect of Atmospheric Chloride Ions on the Corrosion Fatigue of Metal Wire Clips in Power Grids |
| title_full_unstemmed | The Effect of Atmospheric Chloride Ions on the Corrosion Fatigue of Metal Wire Clips in Power Grids |
| title_short | The Effect of Atmospheric Chloride Ions on the Corrosion Fatigue of Metal Wire Clips in Power Grids |
| title_sort | effect of atmospheric chloride ions on the corrosion fatigue of metal wire clips in power grids |
| topic | corrosion fatigue chloride ions steel fatigue wire clips power grids |
| url | https://www.mdpi.com/2073-4433/14/2/237 |
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