Microstructures and mechanical properties of cast Al–Mg–Si alloy with combined addition of Sc and Zr
In present work, an Al–Mg–Si-Sc-Zr alloy with high Mg/Si ratio and the combined addition of Sc, Zr elements was designed to fabricate the cast Al alloys with uniform microstructure. The effect of heat treatment on the microstructure evolution and mechanical properties of designed Al–Mg–Si-Sc-Zr allo...
| Published in: | Journal of Materials Research and Technology |
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| Main Authors: | , , , , , , , , |
| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425004375 |
| _version_ | 1849840545185136640 |
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| author | Xu Yuan Jie Zhou Xianfeng Li Gang Li Qian Wang Yaqi Deng Zhiping Wang Gang Sha Haowei Wang |
| author_facet | Xu Yuan Jie Zhou Xianfeng Li Gang Li Qian Wang Yaqi Deng Zhiping Wang Gang Sha Haowei Wang |
| author_sort | Xu Yuan |
| collection | DOAJ |
| container_title | Journal of Materials Research and Technology |
| description | In present work, an Al–Mg–Si-Sc-Zr alloy with high Mg/Si ratio and the combined addition of Sc, Zr elements was designed to fabricate the cast Al alloys with uniform microstructure. The effect of heat treatment on the microstructure evolution and mechanical properties of designed Al–Mg–Si-Sc-Zr alloy was investigated. The scanning electron microscopy and transmission electron microscopy were used to analyze the second phase evolution. The result suggests that the aging temperature mainly affects the size, phase type and number density of matrix precipitates. It confirms that both the strength and ductility are controlled by precipitates, which are strongly dependent on aging temperature. With proper heat treatment, the ductility of materials is notably enhanced from 2.6% to 13.3% by high number density of nano-sized precipitates (β’’ phase) and plate-like GPII zones with {111}Al habit plane. The formation of plate-like GPII zones should be attributed to the high Mg content of Al–Mg–Si alloys and named as GPII-Mg zones. The β’’ precipitates and GPII zone may precipitate at the Al/Al3(Sc,Zr) interface to form the interface precipitate. High Mg/Si ratio and combined addition of Sc, Zr may provide new insights on alloy design strategy for high performance cast Al–Mg–Si alloys. |
| format | Article |
| id | doaj-art-e0a7914b41b44da989bce27131ca9a49 |
| institution | Directory of Open Access Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| spelling | doaj-art-e0a7914b41b44da989bce27131ca9a492025-08-20T01:22:57ZengElsevierJournal of Materials Research and Technology2238-78542025-03-01355097510610.1016/j.jmrt.2025.02.190Microstructures and mechanical properties of cast Al–Mg–Si alloy with combined addition of Sc and ZrXu Yuan0Jie Zhou1Xianfeng Li2Gang Li3Qian Wang4Yaqi Deng5Zhiping Wang6Gang Sha7Haowei Wang8School of Materials Science and Engineering, Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, 210094, ChinaSchool of Materials Science and Engineering, Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, 210094, ChinaState Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Corresponding author.Brucelee75cn@sjtu.edu.cnState Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Shanghai Electric SHMP Casting & Forging Co., Ltd., Shanghai, 200240, ChinaShanghai Institute of Satellite Engineering, No. 3666 Yuanjiang Road, Shanghai, 201109, ChinaState Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaSchool of Materials Science and Engineering, Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, 210094, China; State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Corresponding author. School of Materials Science and Engineering, Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, 210094, China.wangzhiping@njust.edu.cnSchool of Materials Science and Engineering, Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, 210094, ChinaState Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaIn present work, an Al–Mg–Si-Sc-Zr alloy with high Mg/Si ratio and the combined addition of Sc, Zr elements was designed to fabricate the cast Al alloys with uniform microstructure. The effect of heat treatment on the microstructure evolution and mechanical properties of designed Al–Mg–Si-Sc-Zr alloy was investigated. The scanning electron microscopy and transmission electron microscopy were used to analyze the second phase evolution. The result suggests that the aging temperature mainly affects the size, phase type and number density of matrix precipitates. It confirms that both the strength and ductility are controlled by precipitates, which are strongly dependent on aging temperature. With proper heat treatment, the ductility of materials is notably enhanced from 2.6% to 13.3% by high number density of nano-sized precipitates (β’’ phase) and plate-like GPII zones with {111}Al habit plane. The formation of plate-like GPII zones should be attributed to the high Mg content of Al–Mg–Si alloys and named as GPII-Mg zones. The β’’ precipitates and GPII zone may precipitate at the Al/Al3(Sc,Zr) interface to form the interface precipitate. High Mg/Si ratio and combined addition of Sc, Zr may provide new insights on alloy design strategy for high performance cast Al–Mg–Si alloys.http://www.sciencedirect.com/science/article/pii/S2238785425004375Aluminum alloyAl–Mg–SiPrecipitateAging treatmentAl3(ScZr) |
| spellingShingle | Xu Yuan Jie Zhou Xianfeng Li Gang Li Qian Wang Yaqi Deng Zhiping Wang Gang Sha Haowei Wang Microstructures and mechanical properties of cast Al–Mg–Si alloy with combined addition of Sc and Zr Aluminum alloy Al–Mg–Si Precipitate Aging treatment Al3(Sc Zr) |
| title | Microstructures and mechanical properties of cast Al–Mg–Si alloy with combined addition of Sc and Zr |
| title_full | Microstructures and mechanical properties of cast Al–Mg–Si alloy with combined addition of Sc and Zr |
| title_fullStr | Microstructures and mechanical properties of cast Al–Mg–Si alloy with combined addition of Sc and Zr |
| title_full_unstemmed | Microstructures and mechanical properties of cast Al–Mg–Si alloy with combined addition of Sc and Zr |
| title_short | Microstructures and mechanical properties of cast Al–Mg–Si alloy with combined addition of Sc and Zr |
| title_sort | microstructures and mechanical properties of cast al mg si alloy with combined addition of sc and zr |
| topic | Aluminum alloy Al–Mg–Si Precipitate Aging treatment Al3(Sc Zr) |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425004375 |
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