Influence of different cycle strain amplitudes on the microstructure and properties of 2024 aluminum alloy
The effect of varying strain amplitudes on the tensile properties and microstructure of aluminum alloy 2024 after a solution treatment (ST) of 495 °C for 1 h followed by cyclic strengthening at room temperature in the presence of various strain amplitudes is methodically investigated. Cyclic strain...
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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/S2238785424006008 |
| _version_ | 1827216705633386496 |
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| author | Ye Wang Hai Li Yuyang Han Cong Zhu Xiaotong Gu Mengqi Li Zhixiu Wang |
| author_facet | Ye Wang Hai Li Yuyang Han Cong Zhu Xiaotong Gu Mengqi Li Zhixiu Wang |
| author_sort | Ye Wang |
| collection | DOAJ |
| description | The effect of varying strain amplitudes on the tensile properties and microstructure of aluminum alloy 2024 after a solution treatment (ST) of 495 °C for 1 h followed by cyclic strengthening at room temperature in the presence of various strain amplitudes is methodically investigated. Cyclic strain treatment substantially leads to the enhancement of the strength and plasticity of the alloy. Different strain amplitudes result in distinct strengthening mechanisms in the tested specimens. The specimens treated with low strain amplitudes (Δεt/2 = 0.1–0.4%) exhibit the least changes in the dislocation cell size and the dislocation density. The strengthening is mainly attributed to the precise adjustment of solute cluster precipitation. In specimens treated with high strain amplitudes (Δεt/2 = 0.5–1.1%), various strain amplitudes result in various dislocation configurations. The S-phase precipitation occurs selectively in the dislocation cell walls, forming solute cluster-composite dislocation loops within the dislocation cells, enhancing both the strength and plasticity of the alloy. The rational cyclic strain treatment not only yields the achievement of the precise control of precipitate phases, but also regulates the dislocation configurations. The obtained results reveal that the high-density cluster-composite dislocation loops are capable of resolving the conflict between increasing dislocation density and reducing dislocation pile-up, providing new insights into alloy strengthening. |
| first_indexed | 2024-04-24T22:42:03Z |
| format | Article |
| id | doaj.art-e66ad3fb0f9e42a5b320e1215b073050 |
| 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-e66ad3fb0f9e42a5b320e1215b0730502024-06-20T06:52:26ZengElsevierJournal of Materials Research and Technology2238-78542024-05-0130416423Influence of different cycle strain amplitudes on the microstructure and properties of 2024 aluminum alloyYe Wang0Hai Li1Yuyang Han2Cong Zhu3Xiaotong Gu4Mengqi Li5Zhixiu Wang6School of Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou, 213164, ChinaSchool of Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou, 213164, China; Corresponding author. School of Materials Science and Engineering, Changzhou University, Changzhou, 213164, China.School of Materials Science and Engineering, Changzhou University, Changzhou, 213164, ChinaSchool of Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou, 213164, ChinaSchool of Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou, 213164, ChinaSchool of Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou, 213164, ChinaSchool of Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Changzhou, 213164, ChinaThe effect of varying strain amplitudes on the tensile properties and microstructure of aluminum alloy 2024 after a solution treatment (ST) of 495 °C for 1 h followed by cyclic strengthening at room temperature in the presence of various strain amplitudes is methodically investigated. Cyclic strain treatment substantially leads to the enhancement of the strength and plasticity of the alloy. Different strain amplitudes result in distinct strengthening mechanisms in the tested specimens. The specimens treated with low strain amplitudes (Δεt/2 = 0.1–0.4%) exhibit the least changes in the dislocation cell size and the dislocation density. The strengthening is mainly attributed to the precise adjustment of solute cluster precipitation. In specimens treated with high strain amplitudes (Δεt/2 = 0.5–1.1%), various strain amplitudes result in various dislocation configurations. The S-phase precipitation occurs selectively in the dislocation cell walls, forming solute cluster-composite dislocation loops within the dislocation cells, enhancing both the strength and plasticity of the alloy. The rational cyclic strain treatment not only yields the achievement of the precise control of precipitate phases, but also regulates the dislocation configurations. The obtained results reveal that the high-density cluster-composite dislocation loops are capable of resolving the conflict between increasing dislocation density and reducing dislocation pile-up, providing new insights into alloy strengthening.http://www.sciencedirect.com/science/article/pii/S2238785424006008Aluminum alloy 2024Cyclic strengtheningCycle strain amplitudesToughening mechanismsStrength and plasticitySolute cluster-composite dislocation loops |
| spellingShingle | Ye Wang Hai Li Yuyang Han Cong Zhu Xiaotong Gu Mengqi Li Zhixiu Wang Influence of different cycle strain amplitudes on the microstructure and properties of 2024 aluminum alloy Journal of Materials Research and Technology Aluminum alloy 2024 Cyclic strengthening Cycle strain amplitudes Toughening mechanisms Strength and plasticity Solute cluster-composite dislocation loops |
| title | Influence of different cycle strain amplitudes on the microstructure and properties of 2024 aluminum alloy |
| title_full | Influence of different cycle strain amplitudes on the microstructure and properties of 2024 aluminum alloy |
| title_fullStr | Influence of different cycle strain amplitudes on the microstructure and properties of 2024 aluminum alloy |
| title_full_unstemmed | Influence of different cycle strain amplitudes on the microstructure and properties of 2024 aluminum alloy |
| title_short | Influence of different cycle strain amplitudes on the microstructure and properties of 2024 aluminum alloy |
| title_sort | influence of different cycle strain amplitudes on the microstructure and properties of 2024 aluminum alloy |
| topic | Aluminum alloy 2024 Cyclic strengthening Cycle strain amplitudes Toughening mechanisms Strength and plasticity Solute cluster-composite dislocation loops |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424006008 |
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