Evaluation of Corrosion Behavior on Crept AlSi10MnMg (AA365) Alloy Produced by High-Pressure Die-Casting (HPDC)
High-pressure die-cast AlSi10MnMg (AA365) alloys have been used as a material for automotive components exposed to high temperature and corrosive environments. This work determines the correlation of corrosion resistance with the intermetallic compounds and micro-voids of crept AA365 alloys under te...
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MDPI AG
2021-07-01
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| Online Access: | https://www.mdpi.com/2076-3417/11/13/6227 |
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| author | Seonghwan Park Cheolmin Ahn Eunkyung Lee |
| author_facet | Seonghwan Park Cheolmin Ahn Eunkyung Lee |
| author_sort | Seonghwan Park |
| collection | DOAJ |
| description | High-pressure die-cast AlSi10MnMg (AA365) alloys have been used as a material for automotive components exposed to high temperature and corrosive environments. This work determines the correlation of corrosion resistance with the intermetallic compounds and micro-voids of crept AA365 alloys under temperatures ranging from 373 K to 573 K with various applied stresses. The results showed that crept AA365 alloy at 473 K possessed a large amount of the intermetallic phases, compared with crept AA365 alloys at 373 K and 573 K due to the non-equilibrium solute atoms in Al matrix. By contrast, crept AA365 alloy at 573 K contained the lowest number of intermetallic precipitates owing to the remelting of the phases. With regard to the corrosion behavior, the corrosion potentials showed −687.0, −684.0, and −673.0 mV<sub>SCE</sub> of crept AA365 alloys at 373 K, 473 K, and 573 K, respectively, which means the corrosion occurred slowly on the crept AA365 alloy at 573 K, rather than at 373 K, 473 K. The value of the corrosion current density (I<sub>corr</sub>) in the crept HPDC AA365 alloy at 473 K has the highest corrosion current density of 13.3 × 10<sup>−6</sup> Acm<sup>−2</sup>, compared with others. It can be inferred that the high amount of intermetallic compounds gave rise to severe corrosion and led to the harmful micro-galvanic corrosion of crept AA365 alloy, rather than the micro-voids. |
| first_indexed | 2024-03-10T09:52:33Z |
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| id | doaj.art-267c36d6c7ef46ad8e4e1268cd98082e |
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| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:52:33Z |
| publishDate | 2021-07-01 |
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| series | Applied Sciences |
| spelling | doaj.art-267c36d6c7ef46ad8e4e1268cd98082e2023-11-22T02:35:31ZengMDPI AGApplied Sciences2076-34172021-07-011113622710.3390/app11136227Evaluation of Corrosion Behavior on Crept AlSi10MnMg (AA365) Alloy Produced by High-Pressure Die-Casting (HPDC)Seonghwan Park0Cheolmin Ahn1Eunkyung Lee2Interdisciplinary Major of Maritime AI Convergence, Department of Ocean Advanced Materials Convergence Engineering, Korea Maritime and Ocean University, Busan 49112, KoreaInterdisciplinary Major of Maritime AI Convergence, Department of Ocean Advanced Materials Convergence Engineering, Korea Maritime and Ocean University, Busan 49112, KoreaInterdisciplinary Major of Maritime AI Convergence, Department of Ocean Advanced Materials Convergence Engineering, Korea Maritime and Ocean University, Busan 49112, KoreaHigh-pressure die-cast AlSi10MnMg (AA365) alloys have been used as a material for automotive components exposed to high temperature and corrosive environments. This work determines the correlation of corrosion resistance with the intermetallic compounds and micro-voids of crept AA365 alloys under temperatures ranging from 373 K to 573 K with various applied stresses. The results showed that crept AA365 alloy at 473 K possessed a large amount of the intermetallic phases, compared with crept AA365 alloys at 373 K and 573 K due to the non-equilibrium solute atoms in Al matrix. By contrast, crept AA365 alloy at 573 K contained the lowest number of intermetallic precipitates owing to the remelting of the phases. With regard to the corrosion behavior, the corrosion potentials showed −687.0, −684.0, and −673.0 mV<sub>SCE</sub> of crept AA365 alloys at 373 K, 473 K, and 573 K, respectively, which means the corrosion occurred slowly on the crept AA365 alloy at 573 K, rather than at 373 K, 473 K. The value of the corrosion current density (I<sub>corr</sub>) in the crept HPDC AA365 alloy at 473 K has the highest corrosion current density of 13.3 × 10<sup>−6</sup> Acm<sup>−2</sup>, compared with others. It can be inferred that the high amount of intermetallic compounds gave rise to severe corrosion and led to the harmful micro-galvanic corrosion of crept AA365 alloy, rather than the micro-voids.https://www.mdpi.com/2076-3417/11/13/6227aluminum alloycorrosionmicrostructuretemperatureintermetallic compounds |
| spellingShingle | Seonghwan Park Cheolmin Ahn Eunkyung Lee Evaluation of Corrosion Behavior on Crept AlSi10MnMg (AA365) Alloy Produced by High-Pressure Die-Casting (HPDC) Applied Sciences aluminum alloy corrosion microstructure temperature intermetallic compounds |
| title | Evaluation of Corrosion Behavior on Crept AlSi10MnMg (AA365) Alloy Produced by High-Pressure Die-Casting (HPDC) |
| title_full | Evaluation of Corrosion Behavior on Crept AlSi10MnMg (AA365) Alloy Produced by High-Pressure Die-Casting (HPDC) |
| title_fullStr | Evaluation of Corrosion Behavior on Crept AlSi10MnMg (AA365) Alloy Produced by High-Pressure Die-Casting (HPDC) |
| title_full_unstemmed | Evaluation of Corrosion Behavior on Crept AlSi10MnMg (AA365) Alloy Produced by High-Pressure Die-Casting (HPDC) |
| title_short | Evaluation of Corrosion Behavior on Crept AlSi10MnMg (AA365) Alloy Produced by High-Pressure Die-Casting (HPDC) |
| title_sort | evaluation of corrosion behavior on crept alsi10mnmg aa365 alloy produced by high pressure die casting hpdc |
| topic | aluminum alloy corrosion microstructure temperature intermetallic compounds |
| url | https://www.mdpi.com/2076-3417/11/13/6227 |
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