Impact of Marine Atmospheric Corrosion on the Microstructure and Tensile Properties of 7075 High-Strength Aluminum Alloy

This study aimed to investigate the impact of corrosion on the microstructure and tensile properties of 7075 high-strength alloy. It involved outdoor exposure tests in an actual marine atmospheric environment in Wanning, Hainan Province. The results showed that the 7075 alloy was corroded rapidly in...

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Autores principales: Xiang, Lin, Tao, Jianquan, Xia, Xiangsheng, Zhao, Zude, Chen, Qiang, Su, Yan, Chai, Shuxin, Zheng, Zhongyan, Sun, Jipeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10051216/
https://www.ncbi.nlm.nih.gov/pubmed/36984276
http://dx.doi.org/10.3390/ma16062396
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author Xiang, Lin
Tao, Jianquan
Xia, Xiangsheng
Zhao, Zude
Chen, Qiang
Su, Yan
Chai, Shuxin
Zheng, Zhongyan
Sun, Jipeng
author_facet Xiang, Lin
Tao, Jianquan
Xia, Xiangsheng
Zhao, Zude
Chen, Qiang
Su, Yan
Chai, Shuxin
Zheng, Zhongyan
Sun, Jipeng
author_sort Xiang, Lin
collection PubMed
description This study aimed to investigate the impact of corrosion on the microstructure and tensile properties of 7075 high-strength alloy. It involved outdoor exposure tests in an actual marine atmospheric environment in Wanning, Hainan Province. The results showed that the 7075 alloy was corroded rapidly in the marine atmospheric environment, and corrosion pits and intergranular cracks were generated. The intergranular cracks were extended along the grain boundary during corrosion, leading to the exfoliation of the matrix. The cause for the intergranular corrosion was discussed based on the microstructure characteristics of 7075 alloy. The tensile properties of the 7075 alloy gradually deteriorated with the increase of exposure time in the marine atmospheric environment. The ultimate strength and elongation were decreased by about 3.2% and 58.3%, respectively, after 12 months of outdoor exposure.
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spelling pubmed-100512162023-03-30 Impact of Marine Atmospheric Corrosion on the Microstructure and Tensile Properties of 7075 High-Strength Aluminum Alloy Xiang, Lin Tao, Jianquan Xia, Xiangsheng Zhao, Zude Chen, Qiang Su, Yan Chai, Shuxin Zheng, Zhongyan Sun, Jipeng Materials (Basel) Article This study aimed to investigate the impact of corrosion on the microstructure and tensile properties of 7075 high-strength alloy. It involved outdoor exposure tests in an actual marine atmospheric environment in Wanning, Hainan Province. The results showed that the 7075 alloy was corroded rapidly in the marine atmospheric environment, and corrosion pits and intergranular cracks were generated. The intergranular cracks were extended along the grain boundary during corrosion, leading to the exfoliation of the matrix. The cause for the intergranular corrosion was discussed based on the microstructure characteristics of 7075 alloy. The tensile properties of the 7075 alloy gradually deteriorated with the increase of exposure time in the marine atmospheric environment. The ultimate strength and elongation were decreased by about 3.2% and 58.3%, respectively, after 12 months of outdoor exposure. MDPI 2023-03-16 /pmc/articles/PMC10051216/ /pubmed/36984276 http://dx.doi.org/10.3390/ma16062396 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xiang, Lin
Tao, Jianquan
Xia, Xiangsheng
Zhao, Zude
Chen, Qiang
Su, Yan
Chai, Shuxin
Zheng, Zhongyan
Sun, Jipeng
Impact of Marine Atmospheric Corrosion on the Microstructure and Tensile Properties of 7075 High-Strength Aluminum Alloy
title Impact of Marine Atmospheric Corrosion on the Microstructure and Tensile Properties of 7075 High-Strength Aluminum Alloy
title_full Impact of Marine Atmospheric Corrosion on the Microstructure and Tensile Properties of 7075 High-Strength Aluminum Alloy
title_fullStr Impact of Marine Atmospheric Corrosion on the Microstructure and Tensile Properties of 7075 High-Strength Aluminum Alloy
title_full_unstemmed Impact of Marine Atmospheric Corrosion on the Microstructure and Tensile Properties of 7075 High-Strength Aluminum Alloy
title_short Impact of Marine Atmospheric Corrosion on the Microstructure and Tensile Properties of 7075 High-Strength Aluminum Alloy
title_sort impact of marine atmospheric corrosion on the microstructure and tensile properties of 7075 high-strength aluminum alloy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10051216/
https://www.ncbi.nlm.nih.gov/pubmed/36984276
http://dx.doi.org/10.3390/ma16062396
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