Mechanistic study on mechanical strengthening in As-extruded Mg-xSn (x = 0.5, 2, 4, 6 and 8 wt%) alloys
This study systematically investigates the influence of Sn content (0.5–8 wt%) on the microstructural evolution and mechanical properties of as-extruded Mg-Sn alloys. By combining characterization techniques (XRD, scanning electron microscopy, EDS, and electron backscatter diffraction) with valence...
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Frontiers Media S.A.
2025-07-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2025.1639947/full |
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| author | Tingting Song Fu Yang Xiaowei Niu Zheng Jia Zheng Jia |
| author_facet | Tingting Song Fu Yang Xiaowei Niu Zheng Jia Zheng Jia |
| author_sort | Tingting Song |
| collection | DOAJ |
| description | This study systematically investigates the influence of Sn content (0.5–8 wt%) on the microstructural evolution and mechanical properties of as-extruded Mg-Sn alloys. By combining characterization techniques (XRD, scanning electron microscopy, EDS, and electron backscatter diffraction) with valence electron theory, the fundamental deformation mechanisms were elucidated. The results reveal that Sn content significantly modulates the distribution of Mg2Sn phases, dynamic recrystallization behavior, and deformation modes. The increase of Sn content has no obvious effect on the grain size, but the area fraction of Mg2Sn phase increases. The Mg-Sn bonds show the highest bonding energy among all possible atomic interactions, leading to enhanced mechanical properties. The alloy with 8% Sn demonstrates an optimal strength-ductility balance, due to grain refinement and strong texture effects. Furthermore, low-Sn alloys (≤2 wt%) deform primarily via basal slip, exhibiting ductile fracture characteristics, while high-Sn alloys (≥6 wt%) transition to a mixed fracture mode involving twinning and non-basal slip, attributed to increased Mg2Sn phase content. |
| format | Article |
| id | doaj-art-1dd49f0ac0f34f1c9683a198b887daff |
| institution | Kabale University |
| issn | 2296-8016 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj-art-1dd49f0ac0f34f1c9683a198b887daff2025-08-20T03:32:20ZengFrontiers Media S.A.Frontiers in Materials2296-80162025-07-011210.3389/fmats.2025.16399471639947Mechanistic study on mechanical strengthening in As-extruded Mg-xSn (x = 0.5, 2, 4, 6 and 8 wt%) alloysTingting Song0Fu Yang1Xiaowei Niu2Zheng Jia3Zheng Jia4College of Mechanical Engineering, Shenyang University, Shenyang, ChinaCollege of Mechanical Engineering, Shenyang University, Shenyang, ChinaCollege of Environment, Liaoning Province Pollution Environmental Remediation Professional Technology Innovation Center and Shenyang Key Laboratory of Collaborative Technology Innovation for Industrial Pollution Reduction and Carbon Reduction, Shenyang University, Shenyang, ChinaCollege of Mechanical Engineering, Shenyang University, Shenyang, ChinaCollege of Environment, Liaoning Province Pollution Environmental Remediation Professional Technology Innovation Center and Shenyang Key Laboratory of Collaborative Technology Innovation for Industrial Pollution Reduction and Carbon Reduction, Shenyang University, Shenyang, ChinaThis study systematically investigates the influence of Sn content (0.5–8 wt%) on the microstructural evolution and mechanical properties of as-extruded Mg-Sn alloys. By combining characterization techniques (XRD, scanning electron microscopy, EDS, and electron backscatter diffraction) with valence electron theory, the fundamental deformation mechanisms were elucidated. The results reveal that Sn content significantly modulates the distribution of Mg2Sn phases, dynamic recrystallization behavior, and deformation modes. The increase of Sn content has no obvious effect on the grain size, but the area fraction of Mg2Sn phase increases. The Mg-Sn bonds show the highest bonding energy among all possible atomic interactions, leading to enhanced mechanical properties. The alloy with 8% Sn demonstrates an optimal strength-ductility balance, due to grain refinement and strong texture effects. Furthermore, low-Sn alloys (≤2 wt%) deform primarily via basal slip, exhibiting ductile fracture characteristics, while high-Sn alloys (≥6 wt%) transition to a mixed fracture mode involving twinning and non-basal slip, attributed to increased Mg2Sn phase content.https://www.frontiersin.org/articles/10.3389/fmats.2025.1639947/fullMg-Sn alloyMg2Sn phasevalence electron calculationmechanical propertiesfracture mechanism |
| spellingShingle | Tingting Song Fu Yang Xiaowei Niu Zheng Jia Zheng Jia Mechanistic study on mechanical strengthening in As-extruded Mg-xSn (x = 0.5, 2, 4, 6 and 8 wt%) alloys Frontiers in Materials Mg-Sn alloy Mg2Sn phase valence electron calculation mechanical properties fracture mechanism |
| title | Mechanistic study on mechanical strengthening in As-extruded Mg-xSn (x = 0.5, 2, 4, 6 and 8 wt%) alloys |
| title_full | Mechanistic study on mechanical strengthening in As-extruded Mg-xSn (x = 0.5, 2, 4, 6 and 8 wt%) alloys |
| title_fullStr | Mechanistic study on mechanical strengthening in As-extruded Mg-xSn (x = 0.5, 2, 4, 6 and 8 wt%) alloys |
| title_full_unstemmed | Mechanistic study on mechanical strengthening in As-extruded Mg-xSn (x = 0.5, 2, 4, 6 and 8 wt%) alloys |
| title_short | Mechanistic study on mechanical strengthening in As-extruded Mg-xSn (x = 0.5, 2, 4, 6 and 8 wt%) alloys |
| title_sort | mechanistic study on mechanical strengthening in as extruded mg xsn x 0 5 2 4 6 and 8 wt alloys |
| topic | Mg-Sn alloy Mg2Sn phase valence electron calculation mechanical properties fracture mechanism |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2025.1639947/full |
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