Gradient structure induced simultaneous enhancement of strength and ductility in AZ31 Mg alloy with twin-twin interactions
Gradient nanostructure was introduced to enhance the strength and ductility via deformation incompatibility accommodated by geometrical necessary dislocations for most metallic materials recently. However, few intensive researches were carried out to investigate the effect of gradient structure on t...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-08-01
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| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956721003042 |
| _version_ | 1827267055368273920 |
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| author | Qinghui Zhang Jianguo Li Kun Jiang Pu Li Yusheng Li Yong Zhang Tao Suo |
| author_facet | Qinghui Zhang Jianguo Li Kun Jiang Pu Li Yusheng Li Yong Zhang Tao Suo |
| author_sort | Qinghui Zhang |
| collection | DOAJ |
| description | Gradient nanostructure was introduced to enhance the strength and ductility via deformation incompatibility accommodated by geometrical necessary dislocations for most metallic materials recently. However, few intensive researches were carried out to investigate the effect of gradient structure on the deformation twin evolution and resulting performance improvements. In the present paper, we produced gradient-structured AZ31 Mg alloy with fine-grain layers, parallel twin laminates and a coarse-grain core from two upmost surfaces to the center of plate. Surprisingly, this architected Mg alloy exhibited simultaneous enhancement of strength and ductility. Subsequent microstructural observations demonstrated that abundant twin-twin interactions resulting from higher strength and multi-axial stress state could make great contributions to the increase of work-hardening capability. This was further proved by the measurement of full-field strain evolution during the plastic deformation. Such a design strategy may provide a new path for producing advanced structure materials in which the deformation twinning works as one of the dominant plasticity mechanisms. |
| first_indexed | 2024-03-11T18:29:32Z |
| format | Article |
| id | doaj.art-f5b30adc7a3a468eb9fb1cc0a51e1951 |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2025-03-22T04:27:39Z |
| publishDate | 2023-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-f5b30adc7a3a468eb9fb1cc0a51e19512024-04-28T05:20:30ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672023-08-0111828722882Gradient structure induced simultaneous enhancement of strength and ductility in AZ31 Mg alloy with twin-twin interactionsQinghui Zhang0Jianguo Li1Kun Jiang2Pu Li3Yusheng Li4Yong Zhang5Tao Suo6School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, ChinaSchool of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China; Shaanxi Key Laboratory of Impact Dynamics and Its Engineering Application, Xi'an 710072, China; Corresponding author at: School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China.School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, ChinaSchool of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, ChinaSchool of Materials Science and Engineering, 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, ChinaSchool of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China; Shaanxi Key Laboratory of Impact Dynamics and Its Engineering Application, Xi'an 710072, China; Joint International Research Laboratory of Impact Dynamics and Its Engineering Application, Xi'an 710072, ChinaGradient nanostructure was introduced to enhance the strength and ductility via deformation incompatibility accommodated by geometrical necessary dislocations for most metallic materials recently. However, few intensive researches were carried out to investigate the effect of gradient structure on the deformation twin evolution and resulting performance improvements. In the present paper, we produced gradient-structured AZ31 Mg alloy with fine-grain layers, parallel twin laminates and a coarse-grain core from two upmost surfaces to the center of plate. Surprisingly, this architected Mg alloy exhibited simultaneous enhancement of strength and ductility. Subsequent microstructural observations demonstrated that abundant twin-twin interactions resulting from higher strength and multi-axial stress state could make great contributions to the increase of work-hardening capability. This was further proved by the measurement of full-field strain evolution during the plastic deformation. Such a design strategy may provide a new path for producing advanced structure materials in which the deformation twinning works as one of the dominant plasticity mechanisms.http://www.sciencedirect.com/science/article/pii/S2213956721003042Mg alloyGradient structureStrength-ductility synergyMulti-orientational twinsTwin-twin interactions |
| spellingShingle | Qinghui Zhang Jianguo Li Kun Jiang Pu Li Yusheng Li Yong Zhang Tao Suo Gradient structure induced simultaneous enhancement of strength and ductility in AZ31 Mg alloy with twin-twin interactions Journal of Magnesium and Alloys Mg alloy Gradient structure Strength-ductility synergy Multi-orientational twins Twin-twin interactions |
| title | Gradient structure induced simultaneous enhancement of strength and ductility in AZ31 Mg alloy with twin-twin interactions |
| title_full | Gradient structure induced simultaneous enhancement of strength and ductility in AZ31 Mg alloy with twin-twin interactions |
| title_fullStr | Gradient structure induced simultaneous enhancement of strength and ductility in AZ31 Mg alloy with twin-twin interactions |
| title_full_unstemmed | Gradient structure induced simultaneous enhancement of strength and ductility in AZ31 Mg alloy with twin-twin interactions |
| title_short | Gradient structure induced simultaneous enhancement of strength and ductility in AZ31 Mg alloy with twin-twin interactions |
| title_sort | gradient structure induced simultaneous enhancement of strength and ductility in az31 mg alloy with twin twin interactions |
| topic | Mg alloy Gradient structure Strength-ductility synergy Multi-orientational twins Twin-twin interactions |
| url | http://www.sciencedirect.com/science/article/pii/S2213956721003042 |
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