Impact of Corrosion on the Degradation of the Mechanical Properties of 2195 and 2297 Al Alloys in the Marine Environment
The objective of this work was to study the corrosion behavior of 2xxx aluminum alloys in the marine environment and the degradation of mechanical properties caused by corrosion as well as to provide support for the lightweight design of marine equipment. The corrosion characteristics of 2297-T8 and...
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MDPI AG
2022-08-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/8/1371 |
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| author | Hulin Wu Guang Wu Lin Xiang Jianquan Tao Zhongyan Zheng Jipeng Sun Wei Li Chunyang Huang Xuke Lan |
| author_facet | Hulin Wu Guang Wu Lin Xiang Jianquan Tao Zhongyan Zheng Jipeng Sun Wei Li Chunyang Huang Xuke Lan |
| author_sort | Hulin Wu |
| collection | DOAJ |
| description | The objective of this work was to study the corrosion behavior of 2xxx aluminum alloys in the marine environment and the degradation of mechanical properties caused by corrosion as well as to provide support for the lightweight design of marine equipment. The corrosion characteristics of 2297-T8 and 2195-T8 were observed by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) at 3, 6, 9, and 12 months of exposure, and the mechanical properties were obtained via uniaxial tensile testing. The results of the study showed the following: (1) With an increase in the exposure time, the corrosion products on the surface of 2297-T8 gradually increase, and the corrosion products on the surface of 2195-T8 accumulate rapidly. (2) The results of EDS show that the corrosion products of 2297 are mainly Al oxides and that those of 2195 are composed of Al, Fe, Mn, Si, etc. (3) Through the corrosion pit diameter, corrosion pit depth, and corrosion mass reduction rate surface, the trend of an increasing average radius of the corrosion pits and the corrosion mass reduction rate surface varies linearly, and the average depth of the corrosion pits increases dramatically after 9 months of exposure time. (4) According to the mechanical properties of the study surface, in a marine atmosphere, the degradation of 2297-T8 ductility is higher than that of 2195-T8, while the degradation of the yield stress is lower than that of 2195-T8. |
| first_indexed | 2024-03-09T09:53:26Z |
| format | Article |
| id | doaj.art-fa9b24bcea52419e8ae3494b8911c3d3 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T09:53:26Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-fa9b24bcea52419e8ae3494b8911c3d32023-12-01T23:59:51ZengMDPI AGMetals2075-47012022-08-01128137110.3390/met12081371Impact of Corrosion on the Degradation of the Mechanical Properties of 2195 and 2297 Al Alloys in the Marine EnvironmentHulin Wu0Guang Wu1Lin Xiang2Jianquan Tao3Zhongyan Zheng4Jipeng Sun5Wei Li6Chunyang Huang7Xuke Lan8Precision Forming Center, Southwest Technology and Engineering Research Institute, Chongqing 400039, ChinaIntelligent Protection Research Laboratory, Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, ChinaPrecision Forming Center, Southwest Technology and Engineering Research Institute, Chongqing 400039, ChinaPrecision Forming Center, Southwest Technology and Engineering Research Institute, Chongqing 400039, ChinaPrecision Forming Center, Southwest Technology and Engineering Research Institute, Chongqing 400039, ChinaPrecision Forming Center, Southwest Technology and Engineering Research Institute, Chongqing 400039, ChinaState Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100036, ChinaIntelligent Protection Research Laboratory, Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, ChinaIntelligent Protection Research Laboratory, Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, ChinaThe objective of this work was to study the corrosion behavior of 2xxx aluminum alloys in the marine environment and the degradation of mechanical properties caused by corrosion as well as to provide support for the lightweight design of marine equipment. The corrosion characteristics of 2297-T8 and 2195-T8 were observed by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) at 3, 6, 9, and 12 months of exposure, and the mechanical properties were obtained via uniaxial tensile testing. The results of the study showed the following: (1) With an increase in the exposure time, the corrosion products on the surface of 2297-T8 gradually increase, and the corrosion products on the surface of 2195-T8 accumulate rapidly. (2) The results of EDS show that the corrosion products of 2297 are mainly Al oxides and that those of 2195 are composed of Al, Fe, Mn, Si, etc. (3) Through the corrosion pit diameter, corrosion pit depth, and corrosion mass reduction rate surface, the trend of an increasing average radius of the corrosion pits and the corrosion mass reduction rate surface varies linearly, and the average depth of the corrosion pits increases dramatically after 9 months of exposure time. (4) According to the mechanical properties of the study surface, in a marine atmosphere, the degradation of 2297-T8 ductility is higher than that of 2195-T8, while the degradation of the yield stress is lower than that of 2195-T8.https://www.mdpi.com/2075-4701/12/8/1371aluminum alloys2195-T82297-T8marine environmentmechanical properties |
| spellingShingle | Hulin Wu Guang Wu Lin Xiang Jianquan Tao Zhongyan Zheng Jipeng Sun Wei Li Chunyang Huang Xuke Lan Impact of Corrosion on the Degradation of the Mechanical Properties of 2195 and 2297 Al Alloys in the Marine Environment Metals aluminum alloys 2195-T8 2297-T8 marine environment mechanical properties |
| title | Impact of Corrosion on the Degradation of the Mechanical Properties of 2195 and 2297 Al Alloys in the Marine Environment |
| title_full | Impact of Corrosion on the Degradation of the Mechanical Properties of 2195 and 2297 Al Alloys in the Marine Environment |
| title_fullStr | Impact of Corrosion on the Degradation of the Mechanical Properties of 2195 and 2297 Al Alloys in the Marine Environment |
| title_full_unstemmed | Impact of Corrosion on the Degradation of the Mechanical Properties of 2195 and 2297 Al Alloys in the Marine Environment |
| title_short | Impact of Corrosion on the Degradation of the Mechanical Properties of 2195 and 2297 Al Alloys in the Marine Environment |
| title_sort | impact of corrosion on the degradation of the mechanical properties of 2195 and 2297 al alloys in the marine environment |
| topic | aluminum alloys 2195-T8 2297-T8 marine environment mechanical properties |
| url | https://www.mdpi.com/2075-4701/12/8/1371 |
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