Synergistic enhancement of strength and bendability of Al-Mg-Si-Cu alloys for safety components by adding Mn
High-strength Al-Mg-Si-Cu alloys are difficult to use as safety components in the automotive field due to their poor bendability. In this study, the bendability of high-strength Al-Mg-Si-Cu alloys was improved significantly by the addition of Mn. It achieves a maximum bending angle of about 85°, whi...
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Elsevier
2025-01-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127524009067 |
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| author | Yifeng Li Zibin Wu Dongtao Wang Hiromi Nagaumi Guoyi Zhang Zhixin Feng Xiuhua Luo Yuanzhen Luo Haitao Zhang Bo Zhang |
| author_facet | Yifeng Li Zibin Wu Dongtao Wang Hiromi Nagaumi Guoyi Zhang Zhixin Feng Xiuhua Luo Yuanzhen Luo Haitao Zhang Bo Zhang |
| author_sort | Yifeng Li |
| collection | DOAJ |
| description | High-strength Al-Mg-Si-Cu alloys are difficult to use as safety components in the automotive field due to their poor bendability. In this study, the bendability of high-strength Al-Mg-Si-Cu alloys was improved significantly by the addition of Mn. It achieves a maximum bending angle of about 85°, while its yield strength and tensile strength reach 374 MPa and 405 MPa, respectively, and the elongation is about 15 % at T6. The excellent bendability of high-strength Al-Mg-Si-Cu alloys is attributed to two aspects: On the one hand, after the addition of Mn, a large amount of nano-micron dispersoids are precipitated. The dispersoids distributed uniformly in the matrix effectively pin dislocations and prevent grain boundary migration during deformation. Finally, the alloy obtains a large number of fibrous fine-grain regions and reduces the thickness of the peripheral coarse-grained surface layer. On the other hand, in the fibrous fine-grain regions, the dispersoids and a large number of grain boundaries effectively disperse the bending slip and avoid stress concentration. Finally, the adverse effect of the primary Fe-bearing particles on bendability is weakened. This work provides valuable insight and new methods to improve the bendability of high-strength Al-Mg-Si-Cu alloys. |
| format | Article |
| id | doaj-art-87a105fcb42d42c8b02a185a088bd8ec |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-87a105fcb42d42c8b02a185a088bd8ec2025-01-09T06:12:18ZengElsevierMaterials & Design0264-12752025-01-01249113531Synergistic enhancement of strength and bendability of Al-Mg-Si-Cu alloys for safety components by adding MnYifeng Li0Zibin Wu1Dongtao Wang2Hiromi Nagaumi3Guoyi Zhang4Zhixin Feng5Xiuhua Luo6Yuanzhen Luo7Haitao Zhang8Bo Zhang9High-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou 215021, ChinaHigh-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou 215021, China; Corresponding authors.High-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou 215021, China; Corresponding authors.High-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou 215021, China; Weiqiao Lightweight Research Center at Soochow, Suzhou, Jiangsu 215021, China; Corresponding authors.Weiqiao Lightweight Research Center at Soochow, Suzhou, Jiangsu 215021, ChinaHigh-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou 215021, ChinaKey Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, ChinaHigh-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou 215021, ChinaHigh-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou 215021, ChinaShandong Weiqiao Aluminum & Electricity Co, Ltd, Binzhou 256200, ChinaHigh-strength Al-Mg-Si-Cu alloys are difficult to use as safety components in the automotive field due to their poor bendability. In this study, the bendability of high-strength Al-Mg-Si-Cu alloys was improved significantly by the addition of Mn. It achieves a maximum bending angle of about 85°, while its yield strength and tensile strength reach 374 MPa and 405 MPa, respectively, and the elongation is about 15 % at T6. The excellent bendability of high-strength Al-Mg-Si-Cu alloys is attributed to two aspects: On the one hand, after the addition of Mn, a large amount of nano-micron dispersoids are precipitated. The dispersoids distributed uniformly in the matrix effectively pin dislocations and prevent grain boundary migration during deformation. Finally, the alloy obtains a large number of fibrous fine-grain regions and reduces the thickness of the peripheral coarse-grained surface layer. On the other hand, in the fibrous fine-grain regions, the dispersoids and a large number of grain boundaries effectively disperse the bending slip and avoid stress concentration. Finally, the adverse effect of the primary Fe-bearing particles on bendability is weakened. This work provides valuable insight and new methods to improve the bendability of high-strength Al-Mg-Si-Cu alloys.http://www.sciencedirect.com/science/article/pii/S0264127524009067Al-Mg-Si-Cu alloysHigh strengthBendabilityMicrostructure |
| spellingShingle | Yifeng Li Zibin Wu Dongtao Wang Hiromi Nagaumi Guoyi Zhang Zhixin Feng Xiuhua Luo Yuanzhen Luo Haitao Zhang Bo Zhang Synergistic enhancement of strength and bendability of Al-Mg-Si-Cu alloys for safety components by adding Mn Materials & Design Al-Mg-Si-Cu alloys High strength Bendability Microstructure |
| title | Synergistic enhancement of strength and bendability of Al-Mg-Si-Cu alloys for safety components by adding Mn |
| title_full | Synergistic enhancement of strength and bendability of Al-Mg-Si-Cu alloys for safety components by adding Mn |
| title_fullStr | Synergistic enhancement of strength and bendability of Al-Mg-Si-Cu alloys for safety components by adding Mn |
| title_full_unstemmed | Synergistic enhancement of strength and bendability of Al-Mg-Si-Cu alloys for safety components by adding Mn |
| title_short | Synergistic enhancement of strength and bendability of Al-Mg-Si-Cu alloys for safety components by adding Mn |
| title_sort | synergistic enhancement of strength and bendability of al mg si cu alloys for safety components by adding mn |
| topic | Al-Mg-Si-Cu alloys High strength Bendability Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S0264127524009067 |
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