Enhancing corrosion resistance of Mg-Al-Mn-Ca-Y dilute alloy via novel core-shell structured Al8Mn4Y-Al2Ca and controllable solute segregation
A novel core-shell structured Al8Mn4Y-Al2Ca phase and controllable solute-segregation are elaborately designed in dilute Mg-0.6Al-0.5Mn-0.1Ca-0.1Y alloy (wt.%), via incomplete peritectic transformation during twin-roll casting. When soaked in 3.5 wt.% NaCl solution, Al2Ca shell with a low electroche...
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KeAi Communications Co., Ltd.
2025-01-01
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| Series: | Journal of Magnesium and Alloys |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S221395672300261X |
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| author | Xiaorui Dong Min Zha Dawei Wang Siqing Wang Yajie Yang Hailong Jia |
| author_facet | Xiaorui Dong Min Zha Dawei Wang Siqing Wang Yajie Yang Hailong Jia |
| author_sort | Xiaorui Dong |
| collection | DOAJ |
| description | A novel core-shell structured Al8Mn4Y-Al2Ca phase and controllable solute-segregation are elaborately designed in dilute Mg-0.6Al-0.5Mn-0.1Ca-0.1Y alloy (wt.%), via incomplete peritectic transformation during twin-roll casting. When soaked in 3.5 wt.% NaCl solution, Al2Ca shell with a low electrochemical potential prevents direct contact of noble Al8Mn4Y with Mg matrix, mitigating the micro-galvanic corrosion and meanwhile accelerating the formation of uniform corrosion film. Thereafter, solute (Al, Ca)-segregation motivates the formation of heterogeneous multilayered corrosion product films, enhancing corrosion resistance and even achieving self-healing upon long-term corrosion. Notably, the dilute Mg alloy exhibits a corrosion rate as low as 0.22 ± 0.05 mm·y−1. |
| format | Article |
| id | doaj-art-5bd6ebbb8627452692e954d477396570 |
| institution | Kabale University |
| issn | 2213-9567 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj-art-5bd6ebbb8627452692e954d4773965702025-02-06T05:11:37ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672025-01-01131172192Enhancing corrosion resistance of Mg-Al-Mn-Ca-Y dilute alloy via novel core-shell structured Al8Mn4Y-Al2Ca and controllable solute segregationXiaorui Dong0Min Zha1Dawei Wang2Siqing Wang3Yajie Yang4Hailong Jia5Key Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, ChinaState Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China; Key Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China; International Center of Future Science, Jilin University, Changchun 130012, China; Corresponding authors at: Key Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China.Key Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China; Corresponding authors at: Key Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China.Key Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, ChinaKey Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, ChinaKey Laboratory of Automobile Materials of Ministry of Education & School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China; International Center of Future Science, Jilin University, Changchun 130012, ChinaA novel core-shell structured Al8Mn4Y-Al2Ca phase and controllable solute-segregation are elaborately designed in dilute Mg-0.6Al-0.5Mn-0.1Ca-0.1Y alloy (wt.%), via incomplete peritectic transformation during twin-roll casting. When soaked in 3.5 wt.% NaCl solution, Al2Ca shell with a low electrochemical potential prevents direct contact of noble Al8Mn4Y with Mg matrix, mitigating the micro-galvanic corrosion and meanwhile accelerating the formation of uniform corrosion film. Thereafter, solute (Al, Ca)-segregation motivates the formation of heterogeneous multilayered corrosion product films, enhancing corrosion resistance and even achieving self-healing upon long-term corrosion. Notably, the dilute Mg alloy exhibits a corrosion rate as low as 0.22 ± 0.05 mm·y−1.http://www.sciencedirect.com/science/article/pii/S221395672300261XMg-Al-Mn-based alloysCore-shell structureSolute segregationCorrosion behaviorProtective film |
| spellingShingle | Xiaorui Dong Min Zha Dawei Wang Siqing Wang Yajie Yang Hailong Jia Enhancing corrosion resistance of Mg-Al-Mn-Ca-Y dilute alloy via novel core-shell structured Al8Mn4Y-Al2Ca and controllable solute segregation Journal of Magnesium and Alloys Mg-Al-Mn-based alloys Core-shell structure Solute segregation Corrosion behavior Protective film |
| title | Enhancing corrosion resistance of Mg-Al-Mn-Ca-Y dilute alloy via novel core-shell structured Al8Mn4Y-Al2Ca and controllable solute segregation |
| title_full | Enhancing corrosion resistance of Mg-Al-Mn-Ca-Y dilute alloy via novel core-shell structured Al8Mn4Y-Al2Ca and controllable solute segregation |
| title_fullStr | Enhancing corrosion resistance of Mg-Al-Mn-Ca-Y dilute alloy via novel core-shell structured Al8Mn4Y-Al2Ca and controllable solute segregation |
| title_full_unstemmed | Enhancing corrosion resistance of Mg-Al-Mn-Ca-Y dilute alloy via novel core-shell structured Al8Mn4Y-Al2Ca and controllable solute segregation |
| title_short | Enhancing corrosion resistance of Mg-Al-Mn-Ca-Y dilute alloy via novel core-shell structured Al8Mn4Y-Al2Ca and controllable solute segregation |
| title_sort | enhancing corrosion resistance of mg al mn ca y dilute alloy via novel core shell structured al8mn4y al2ca and controllable solute segregation |
| topic | Mg-Al-Mn-based alloys Core-shell structure Solute segregation Corrosion behavior Protective film |
| url | http://www.sciencedirect.com/science/article/pii/S221395672300261X |
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