Microstructure evolution and electrochemical corrosion behavior of Al–Zn–Mg aluminum alloy
Electrochemical corrosion behavior of Sn-containing Al–Zn–Mg aluminum alloy has been studied in detail. The localized corrosion behaviors were studied by electrochemical impedance spectroscopy (EIS) analysis, and the potentiodynamic polarization measurements. The grain structure, grain-boundary micr...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac6731 |
| _version_ | 1797746593425784832 |
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| author | Teng Dun-Bo Zhang Hong Han Cui-Hong Xu Yu-Rong Liu Zhen Zhang Ri-Qiang Chen Xiao |
| author_facet | Teng Dun-Bo Zhang Hong Han Cui-Hong Xu Yu-Rong Liu Zhen Zhang Ri-Qiang Chen Xiao |
| author_sort | Teng Dun-Bo |
| collection | DOAJ |
| description | Electrochemical corrosion behavior of Sn-containing Al–Zn–Mg aluminum alloy has been studied in detail. The localized corrosion behaviors were studied by electrochemical impedance spectroscopy (EIS) analysis, and the potentiodynamic polarization measurements. The grain structure, grain-boundary microstructure, grain-boundary microchemistry, pitting and intergranular corrosion morphology were characterized and observed using SEM, EDS, TEM, SAED and HRTEM analyses. Based on these tests, the effects of grain-boundary on the corrosion resistance in our Sn-containing Al–Zn–Mg alloys before/after bake hardening were analyzed systematically. Finally, the relationship between chemical composition, microstructure evolution and corrosion behaviour was revealed. The results indicate that the bake hardening process improves the corrosion resistance compared to the pre-aging state. The grain size has little effect on the electrochemical corrosion bahavior. |
| first_indexed | 2024-03-12T15:40:00Z |
| format | Article |
| id | doaj.art-385fa40c73e94759b049d75ee4fa9d4e |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:40:00Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-385fa40c73e94759b049d75ee4fa9d4e2023-08-09T16:02:15ZengIOP PublishingMaterials Research Express2053-15912022-01-019404651910.1088/2053-1591/ac6731Microstructure evolution and electrochemical corrosion behavior of Al–Zn–Mg aluminum alloyTeng Dun-Bo0Zhang Hong1Han Cui-Hong2Xu Yu-Rong3Liu Zhen4https://orcid.org/0000-0002-6140-8814Zhang Ri-Qiang5Chen Xiao6College of Engineering, Yantai Nanshan University , Yantai 265700, Shandong, People’s Republic of ChinaCollege of Engineering, Yantai Nanshan University , Yantai 265700, Shandong, People’s Republic of ChinaCollege of Engineering, Yantai Nanshan University , Yantai 265700, Shandong, People’s Republic of ChinaCollege of Engineering, Yantai Nanshan University , Yantai 265700, Shandong, People’s Republic of ChinaYantai Nanshan Vocational-Technical School, Yantai 265713, Shandong, People’s Republic of ChinaNational Engineering Research Center for Plastic Working of Aluminum Alloys, Shandong Nanshan Aluminum Co Ltd, Yantai 265713, Shandong, People’s Republic of ChinaCollege of Engineering, Yantai Nanshan University , Yantai 265700, Shandong, People’s Republic of ChinaElectrochemical corrosion behavior of Sn-containing Al–Zn–Mg aluminum alloy has been studied in detail. The localized corrosion behaviors were studied by electrochemical impedance spectroscopy (EIS) analysis, and the potentiodynamic polarization measurements. The grain structure, grain-boundary microstructure, grain-boundary microchemistry, pitting and intergranular corrosion morphology were characterized and observed using SEM, EDS, TEM, SAED and HRTEM analyses. Based on these tests, the effects of grain-boundary on the corrosion resistance in our Sn-containing Al–Zn–Mg alloys before/after bake hardening were analyzed systematically. Finally, the relationship between chemical composition, microstructure evolution and corrosion behaviour was revealed. The results indicate that the bake hardening process improves the corrosion resistance compared to the pre-aging state. The grain size has little effect on the electrochemical corrosion bahavior.https://doi.org/10.1088/2053-1591/ac6731Al–Zn–Mg alloyprecipitation phasemicrostructure evolutiongrain-boundary microstructureelectrochemical corrosion behavior |
| spellingShingle | Teng Dun-Bo Zhang Hong Han Cui-Hong Xu Yu-Rong Liu Zhen Zhang Ri-Qiang Chen Xiao Microstructure evolution and electrochemical corrosion behavior of Al–Zn–Mg aluminum alloy Materials Research Express Al–Zn–Mg alloy precipitation phase microstructure evolution grain-boundary microstructure electrochemical corrosion behavior |
| title | Microstructure evolution and electrochemical corrosion behavior of Al–Zn–Mg aluminum alloy |
| title_full | Microstructure evolution and electrochemical corrosion behavior of Al–Zn–Mg aluminum alloy |
| title_fullStr | Microstructure evolution and electrochemical corrosion behavior of Al–Zn–Mg aluminum alloy |
| title_full_unstemmed | Microstructure evolution and electrochemical corrosion behavior of Al–Zn–Mg aluminum alloy |
| title_short | Microstructure evolution and electrochemical corrosion behavior of Al–Zn–Mg aluminum alloy |
| title_sort | microstructure evolution and electrochemical corrosion behavior of al zn mg aluminum alloy |
| topic | Al–Zn–Mg alloy precipitation phase microstructure evolution grain-boundary microstructure electrochemical corrosion behavior |
| url | https://doi.org/10.1088/2053-1591/ac6731 |
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