An investigation of the impacts of non-isothermal aging on the microstructures and corrosion of WE43 Mg alloy
The impacts of non-isothermal aging treatment (NIA) on the microstructure and corrosion resistance of WE43 magnesium alloy was examined through weight loss experiments, hydrogen evolution experiments, electrochemical assessments, three-dimensional microscopy, potential surface measurements, and micr...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423022196 |
| _version_ | 1797646656227770368 |
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| author | Zhi Chen Huizhong Li Xiaopeng Liang Hui Tao Yixuan Che Ming-Chun Zhao |
| author_facet | Zhi Chen Huizhong Li Xiaopeng Liang Hui Tao Yixuan Che Ming-Chun Zhao |
| author_sort | Zhi Chen |
| collection | DOAJ |
| description | The impacts of non-isothermal aging treatment (NIA) on the microstructure and corrosion resistance of WE43 magnesium alloy was examined through weight loss experiments, hydrogen evolution experiments, electrochemical assessments, three-dimensional microscopy, potential surface measurements, and microscopic analyses. The NIA modified the WE43 magnesium alloy by decreasing the precipitation-free zone (PFZ) and disrupting the continuous arrangement of precipitates along the grain boundaries. The Volta potential at the grain boundaries of NAI specimens (with respect to the matrix) was −35 mV, significantly lower than −110 mV in T6 specimens. Due to the effect of micro-galvanic corrosion between the grain boundaries and the grain interiors couple, T6 specimens exhibited significant grain boundary corrosion. They showed grooves with a maximum depth of about 13 μm and a width of about 30 μm after the immersion test. The NAI specimens have shallower grooves at the grain boundary. The corrosion rate of the three specimens was ranked as T4> T6> NAI. |
| first_indexed | 2024-03-11T15:04:49Z |
| format | Article |
| id | doaj.art-79c72421568740878c9ba571268cec7b |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:04:49Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-79c72421568740878c9ba571268cec7b2023-10-30T06:04:34ZengElsevierJournal of Materials Research and Technology2238-78542023-09-012676057618An investigation of the impacts of non-isothermal aging on the microstructures and corrosion of WE43 Mg alloyZhi Chen0Huizhong Li1Xiaopeng Liang2Hui Tao3Yixuan Che4Ming-Chun Zhao5School of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, China; State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; Corresponding author. School of Materials Science and Engineering, Central South University, Changsha 410083, China.School of Materials Science and Engineering, Central South University, Changsha 410083, China; State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; Corresponding author. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaThe impacts of non-isothermal aging treatment (NIA) on the microstructure and corrosion resistance of WE43 magnesium alloy was examined through weight loss experiments, hydrogen evolution experiments, electrochemical assessments, three-dimensional microscopy, potential surface measurements, and microscopic analyses. The NIA modified the WE43 magnesium alloy by decreasing the precipitation-free zone (PFZ) and disrupting the continuous arrangement of precipitates along the grain boundaries. The Volta potential at the grain boundaries of NAI specimens (with respect to the matrix) was −35 mV, significantly lower than −110 mV in T6 specimens. Due to the effect of micro-galvanic corrosion between the grain boundaries and the grain interiors couple, T6 specimens exhibited significant grain boundary corrosion. They showed grooves with a maximum depth of about 13 μm and a width of about 30 μm after the immersion test. The NAI specimens have shallower grooves at the grain boundary. The corrosion rate of the three specimens was ranked as T4> T6> NAI.http://www.sciencedirect.com/science/article/pii/S2238785423022196WE43 Mg alloyNon-isothermal ageingHeat treatmentCorrosion rate |
| spellingShingle | Zhi Chen Huizhong Li Xiaopeng Liang Hui Tao Yixuan Che Ming-Chun Zhao An investigation of the impacts of non-isothermal aging on the microstructures and corrosion of WE43 Mg alloy Journal of Materials Research and Technology WE43 Mg alloy Non-isothermal ageing Heat treatment Corrosion rate |
| title | An investigation of the impacts of non-isothermal aging on the microstructures and corrosion of WE43 Mg alloy |
| title_full | An investigation of the impacts of non-isothermal aging on the microstructures and corrosion of WE43 Mg alloy |
| title_fullStr | An investigation of the impacts of non-isothermal aging on the microstructures and corrosion of WE43 Mg alloy |
| title_full_unstemmed | An investigation of the impacts of non-isothermal aging on the microstructures and corrosion of WE43 Mg alloy |
| title_short | An investigation of the impacts of non-isothermal aging on the microstructures and corrosion of WE43 Mg alloy |
| title_sort | investigation of the impacts of non isothermal aging on the microstructures and corrosion of we43 mg alloy |
| topic | WE43 Mg alloy Non-isothermal ageing Heat treatment Corrosion rate |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423022196 |
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