A new insight to regulate microstructure and enhance corrosion resistance of the Al-Mg-Si alloy by TCB seed alloy
This study proposed a new insight to design the microstructure, improve the corrosion processes and ameliorate the corrosion resistance of Al-Mg-Si alloy through TCB seed alloy. The studied alloys were devised with great resistance to pitting corrosion by achieving the AlMnFeSi phase with smaller si...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525000747 |
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| author | Weiyi Wang Mengxia Han Guiliang Liu Qianqian Sun Hong Duan Xiangfa Liu |
| author_facet | Weiyi Wang Mengxia Han Guiliang Liu Qianqian Sun Hong Duan Xiangfa Liu |
| author_sort | Weiyi Wang |
| collection | DOAJ |
| description | This study proposed a new insight to design the microstructure, improve the corrosion processes and ameliorate the corrosion resistance of Al-Mg-Si alloy through TCB seed alloy. The studied alloys were devised with great resistance to pitting corrosion by achieving the AlMnFeSi phase with smaller size and disperse distribution, the finer grain structure as well as higher density and more evenly aging precipitates. Taking the 6061-1TCB sample immersed for 72 h in the 3.5 % NaCl aqueous solution as an example, the depth of corrosion pits decreases from 20 μm to 4 μm as well as the percentage of pitting corrosion decreases from 6.6 % to 2.1 % compared with the 6061 alloy. The great intergranular resistance can be obtained by the more tortuous grain boundaries and higher percentage of low angle grain boundaries. Taking the 6061-1TCB sample as an example, the deepest position of intergranular corrosion decreases from 728 μm to 505 μm as well as the area percentage of detached grains decreases from 65 % to 22 % compared with the 6061 alloy. Based on the enhancement of pitting and intergranular corrosion resistance with TCB seed alloy, EXCO degree can also be improved from EA to PC level. |
| format | Article |
| id | doaj-art-1efc5819ad1a419db6861b7b6e04fbfe |
| institution | DOAJ |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-1efc5819ad1a419db6861b7b6e04fbfe2025-08-20T02:55:17ZengElsevierMaterials & Design0264-12752025-03-0125111365410.1016/j.matdes.2025.113654A new insight to regulate microstructure and enhance corrosion resistance of the Al-Mg-Si alloy by TCB seed alloyWeiyi Wang0Mengxia Han1Guiliang Liu2Qianqian Sun3Hong Duan4Xiangfa Liu5Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061 PR ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061 PR ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061 PR ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061 PR ChinaKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061 PR ChinaCorresponding author.; Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061 PR ChinaThis study proposed a new insight to design the microstructure, improve the corrosion processes and ameliorate the corrosion resistance of Al-Mg-Si alloy through TCB seed alloy. The studied alloys were devised with great resistance to pitting corrosion by achieving the AlMnFeSi phase with smaller size and disperse distribution, the finer grain structure as well as higher density and more evenly aging precipitates. Taking the 6061-1TCB sample immersed for 72 h in the 3.5 % NaCl aqueous solution as an example, the depth of corrosion pits decreases from 20 μm to 4 μm as well as the percentage of pitting corrosion decreases from 6.6 % to 2.1 % compared with the 6061 alloy. The great intergranular resistance can be obtained by the more tortuous grain boundaries and higher percentage of low angle grain boundaries. Taking the 6061-1TCB sample as an example, the deepest position of intergranular corrosion decreases from 728 μm to 505 μm as well as the area percentage of detached grains decreases from 65 % to 22 % compared with the 6061 alloy. Based on the enhancement of pitting and intergranular corrosion resistance with TCB seed alloy, EXCO degree can also be improved from EA to PC level.http://www.sciencedirect.com/science/article/pii/S0264127525000747Al-Mg-Si alloyTCB seed alloyPitting corrosionIntergranular corrosionElectrochemistryMicrostructural evolution |
| spellingShingle | Weiyi Wang Mengxia Han Guiliang Liu Qianqian Sun Hong Duan Xiangfa Liu A new insight to regulate microstructure and enhance corrosion resistance of the Al-Mg-Si alloy by TCB seed alloy Materials & Design Al-Mg-Si alloy TCB seed alloy Pitting corrosion Intergranular corrosion Electrochemistry Microstructural evolution |
| title | A new insight to regulate microstructure and enhance corrosion resistance of the Al-Mg-Si alloy by TCB seed alloy |
| title_full | A new insight to regulate microstructure and enhance corrosion resistance of the Al-Mg-Si alloy by TCB seed alloy |
| title_fullStr | A new insight to regulate microstructure and enhance corrosion resistance of the Al-Mg-Si alloy by TCB seed alloy |
| title_full_unstemmed | A new insight to regulate microstructure and enhance corrosion resistance of the Al-Mg-Si alloy by TCB seed alloy |
| title_short | A new insight to regulate microstructure and enhance corrosion resistance of the Al-Mg-Si alloy by TCB seed alloy |
| title_sort | new insight to regulate microstructure and enhance corrosion resistance of the al mg si alloy by tcb seed alloy |
| topic | Al-Mg-Si alloy TCB seed alloy Pitting corrosion Intergranular corrosion Electrochemistry Microstructural evolution |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525000747 |
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