Achieving high strength-ductility of an Al–Mg–Si–Cu alloy via heterostructure coupling with pre-aging precipitation
The heterostructured Al–Mg–Si–Cu alloy profile modified by TiB2–TiC particles was prepared by conventional extrusion and solution treatment, and the coupling effect of the heterostructure and the precipitates on the mechanical properties of the alloy profile was studied in this work. The results sho...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424007531 |
| _version_ | 1827216705849393152 |
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| author | Shibiao Zhong Jiqiang Chen Shengci Li Jieke Ren Wei Hu Jialin Guo Olanrewaju A. Ojo |
| author_facet | Shibiao Zhong Jiqiang Chen Shengci Li Jieke Ren Wei Hu Jialin Guo Olanrewaju A. Ojo |
| author_sort | Shibiao Zhong |
| collection | DOAJ |
| description | The heterostructured Al–Mg–Si–Cu alloy profile modified by TiB2–TiC particles was prepared by conventional extrusion and solution treatment, and the coupling effect of the heterostructure and the precipitates on the mechanical properties of the alloy profile was studied in this work. The results showed that the peak-aged alloy sample has high tensile strength (385 MPa) and yield strength (366 MPa) with low elongation (4.8%), while the pre-aged sample achieves higher tensile strength (426 MPa), yield strength (401 MPa), and also the elongation (8.0%). The better comprehensive mechanical properties of the pre-aged sample were attributed to the synergistic strengthening effect of precipitation strengthening and hetero-deformation induced (HDI) stress strengthening. The fine precipitates easy to shear in pre-aged sample are more advantageous than the precipitates in peak-aged sample for the heterostructured Al alloy, because they provided precipitation strengthening by hindering the slip of dislocations and did not prevent the accumulation of geometrically necessary dislocations (GNDs) resulting in HDI strengthening and HDI strain hardening. This work provides a new strategy for promoting the comprehensive mechanical properties of age-hardenable aluminum alloy with heterogeneous structure. |
| first_indexed | 2024-04-24T13:11:09Z |
| format | Article |
| id | doaj.art-e675740dc67f4a728bd55a42e50295c8 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2025-03-21T15:07:22Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-e675740dc67f4a728bd55a42e50295c82024-06-20T06:53:08ZengElsevierJournal of Materials Research and Technology2238-78542024-05-013022232231Achieving high strength-ductility of an Al–Mg–Si–Cu alloy via heterostructure coupling with pre-aging precipitationShibiao Zhong0Jiqiang Chen1Shengci Li2Jieke Ren3Wei Hu4Jialin Guo5Olanrewaju A. Ojo6Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, ChinaMetallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China; Ningbo Boway Alloy Material Co., Ltd, Ningbo, 315135, China; Corresponding author. Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China.Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China; Corresponding author.State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores, Zijin Mining Group Co., Ltd, Xiamen, 361000, ChinaMetallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, ChinaJiangsu Huachang Aluminum Factory Co., Ltd, Xuzhou, 221600, ChinaMetallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China; Department of Mechanical Engineering, University of Manitoba, Winnipeg, R3T5V6, Canada; Corresponding author. Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China.The heterostructured Al–Mg–Si–Cu alloy profile modified by TiB2–TiC particles was prepared by conventional extrusion and solution treatment, and the coupling effect of the heterostructure and the precipitates on the mechanical properties of the alloy profile was studied in this work. The results showed that the peak-aged alloy sample has high tensile strength (385 MPa) and yield strength (366 MPa) with low elongation (4.8%), while the pre-aged sample achieves higher tensile strength (426 MPa), yield strength (401 MPa), and also the elongation (8.0%). The better comprehensive mechanical properties of the pre-aged sample were attributed to the synergistic strengthening effect of precipitation strengthening and hetero-deformation induced (HDI) stress strengthening. The fine precipitates easy to shear in pre-aged sample are more advantageous than the precipitates in peak-aged sample for the heterostructured Al alloy, because they provided precipitation strengthening by hindering the slip of dislocations and did not prevent the accumulation of geometrically necessary dislocations (GNDs) resulting in HDI strengthening and HDI strain hardening. This work provides a new strategy for promoting the comprehensive mechanical properties of age-hardenable aluminum alloy with heterogeneous structure.http://www.sciencedirect.com/science/article/pii/S2238785424007531Aluminum alloyHeterogeneous structureHeat treatmentPrecipitationMechanical properties |
| spellingShingle | Shibiao Zhong Jiqiang Chen Shengci Li Jieke Ren Wei Hu Jialin Guo Olanrewaju A. Ojo Achieving high strength-ductility of an Al–Mg–Si–Cu alloy via heterostructure coupling with pre-aging precipitation Journal of Materials Research and Technology Aluminum alloy Heterogeneous structure Heat treatment Precipitation Mechanical properties |
| title | Achieving high strength-ductility of an Al–Mg–Si–Cu alloy via heterostructure coupling with pre-aging precipitation |
| title_full | Achieving high strength-ductility of an Al–Mg–Si–Cu alloy via heterostructure coupling with pre-aging precipitation |
| title_fullStr | Achieving high strength-ductility of an Al–Mg–Si–Cu alloy via heterostructure coupling with pre-aging precipitation |
| title_full_unstemmed | Achieving high strength-ductility of an Al–Mg–Si–Cu alloy via heterostructure coupling with pre-aging precipitation |
| title_short | Achieving high strength-ductility of an Al–Mg–Si–Cu alloy via heterostructure coupling with pre-aging precipitation |
| title_sort | achieving high strength ductility of an al mg si cu alloy via heterostructure coupling with pre aging precipitation |
| topic | Aluminum alloy Heterogeneous structure Heat treatment Precipitation Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424007531 |
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