Synergistic effect of Al3(Er, Zr) precipitation and hot extrusion on the microstructural evolution of a novel Al–Mg–Si–Er–Zr alloy
Isothermal hot compression experiments of homogenized Al–Mg–Si–Er–Zr alloy were conducted at temperatures ranging from 350 to 500 °C and strain rates of 0.01–10 s−1 on a Gleeble-3500 thermal simulation tester. The hot deformation behavior and optimum processing parameters of the alloy were determine...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422018816 |
| _version_ | 1828054113740390400 |
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| author | Meilin Wang Wu Wei Wei Shi Xiaorong Zhou Shengping Wen Xiaolan Wu Kunyuan Gao Li Rong Peng Qi Hui Huang Zuoren Nie |
| author_facet | Meilin Wang Wu Wei Wei Shi Xiaorong Zhou Shengping Wen Xiaolan Wu Kunyuan Gao Li Rong Peng Qi Hui Huang Zuoren Nie |
| author_sort | Meilin Wang |
| collection | DOAJ |
| description | Isothermal hot compression experiments of homogenized Al–Mg–Si–Er–Zr alloy were conducted at temperatures ranging from 350 to 500 °C and strain rates of 0.01–10 s−1 on a Gleeble-3500 thermal simulation tester. The hot deformation behavior and optimum processing parameters of the alloy were determined by analyzing the flow curves and processing maps. Characterization of the microstructures of the deformed specimens was done using electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM), and the geometrically necessary dislocation (GND) density was used based on the kernel average misorientation (KAM). The results showed that the GND density decreased with a decrease in the strain rate and with an increase in the deformation temperature. Dynamic recovery and continuous dynamic recrystallization were the main softening mechanisms during hot deformation, and dynamic recovery was dominant. It was found that the capacity for dynamic recovery was reduced, while dynamic recrystallization was prevented in the Al–Mg–Si–Er–Zr alloy. This was a result of hindered dislocations and sub-grain boundary movement caused by the pinning of dislocations and sub-grain boundaries from the Mg2Si, Al(MnFe)Si, and Al3(Er, Zr) particles. The addition of Er and Zr resulted in an increase in the activation energy, which can be attributed to the formation of Al3(Er, Zr) particles. |
| first_indexed | 2024-04-10T20:17:41Z |
| format | Article |
| id | doaj.art-5209fd231de14442bd3cc3d8f97b30bf |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-10T20:17:41Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-5209fd231de14442bd3cc3d8f97b30bf2023-01-26T04:45:54ZengElsevierJournal of Materials Research and Technology2238-78542023-01-0122947957Synergistic effect of Al3(Er, Zr) precipitation and hot extrusion on the microstructural evolution of a novel Al–Mg–Si–Er–Zr alloyMeilin Wang0Wu Wei1Wei Shi2Xiaorong Zhou3Shengping Wen4Xiaolan Wu5Kunyuan Gao6Li Rong7Peng Qi8Hui Huang9Zuoren Nie10Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China; Corresponding author.Institute of Corrosion Science and Technology, Guangzhou 510530, ChinaDepartment of Materials, The University of Manchester, Manchester, M13 9PL, UKKey Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China; Corresponding author.Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, ChinaIsothermal hot compression experiments of homogenized Al–Mg–Si–Er–Zr alloy were conducted at temperatures ranging from 350 to 500 °C and strain rates of 0.01–10 s−1 on a Gleeble-3500 thermal simulation tester. The hot deformation behavior and optimum processing parameters of the alloy were determined by analyzing the flow curves and processing maps. Characterization of the microstructures of the deformed specimens was done using electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM), and the geometrically necessary dislocation (GND) density was used based on the kernel average misorientation (KAM). The results showed that the GND density decreased with a decrease in the strain rate and with an increase in the deformation temperature. Dynamic recovery and continuous dynamic recrystallization were the main softening mechanisms during hot deformation, and dynamic recovery was dominant. It was found that the capacity for dynamic recovery was reduced, while dynamic recrystallization was prevented in the Al–Mg–Si–Er–Zr alloy. This was a result of hindered dislocations and sub-grain boundary movement caused by the pinning of dislocations and sub-grain boundaries from the Mg2Si, Al(MnFe)Si, and Al3(Er, Zr) particles. The addition of Er and Zr resulted in an increase in the activation energy, which can be attributed to the formation of Al3(Er, Zr) particles.http://www.sciencedirect.com/science/article/pii/S2238785422018816Al–Mg–Si–Er–Zr alloyHot deformationMicrostructure evolutionDynamic recrystallizationMicrostructure characterization |
| spellingShingle | Meilin Wang Wu Wei Wei Shi Xiaorong Zhou Shengping Wen Xiaolan Wu Kunyuan Gao Li Rong Peng Qi Hui Huang Zuoren Nie Synergistic effect of Al3(Er, Zr) precipitation and hot extrusion on the microstructural evolution of a novel Al–Mg–Si–Er–Zr alloy Journal of Materials Research and Technology Al–Mg–Si–Er–Zr alloy Hot deformation Microstructure evolution Dynamic recrystallization Microstructure characterization |
| title | Synergistic effect of Al3(Er, Zr) precipitation and hot extrusion on the microstructural evolution of a novel Al–Mg–Si–Er–Zr alloy |
| title_full | Synergistic effect of Al3(Er, Zr) precipitation and hot extrusion on the microstructural evolution of a novel Al–Mg–Si–Er–Zr alloy |
| title_fullStr | Synergistic effect of Al3(Er, Zr) precipitation and hot extrusion on the microstructural evolution of a novel Al–Mg–Si–Er–Zr alloy |
| title_full_unstemmed | Synergistic effect of Al3(Er, Zr) precipitation and hot extrusion on the microstructural evolution of a novel Al–Mg–Si–Er–Zr alloy |
| title_short | Synergistic effect of Al3(Er, Zr) precipitation and hot extrusion on the microstructural evolution of a novel Al–Mg–Si–Er–Zr alloy |
| title_sort | synergistic effect of al3 er zr precipitation and hot extrusion on the microstructural evolution of a novel al mg si er zr alloy |
| topic | Al–Mg–Si–Er–Zr alloy Hot deformation Microstructure evolution Dynamic recrystallization Microstructure characterization |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422018816 |
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