Experimental characterization and atomistic simulation of grain boundary segregation in Mg-Y alloys
As a rare earth solute element in Mg alloys, Y has the beneficial effects of increasing both the strength and the ductility as well as weakening the crystallographic texture. To achieve a more fundamental understanding on how Y addition affects the microstructural evolution and mechanical properties...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-06-01
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| Series: | Journal of Magnesium and Alloys |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956725001604 |
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| author | Qianying Shi Vaidehi Menon Liang Qi John Allison |
| author_facet | Qianying Shi Vaidehi Menon Liang Qi John Allison |
| author_sort | Qianying Shi |
| collection | DOAJ |
| description | As a rare earth solute element in Mg alloys, Y has the beneficial effects of increasing both the strength and the ductility as well as weakening the crystallographic texture. To achieve a more fundamental understanding on how Y addition affects the microstructural evolution and mechanical properties, the Y segregation behavior at grain boundaries was investigated in Mg-1wt.%Y and Mg-7wt.%Y alloys at different conditions. The segregation intensity and its dependence on the grain boundary misorientation angle were experimentally characterized and computationally predicted. Strong segregation at grain boundaries was observed in both low and high Y-containing alloys. Y segregation was found to remain in alloy Mg-7Y after high-temperature annealing heat treatment at 540 °C. No direct correlation between the Y segregation intensity and the grain boundary misorientation angle could be established based on either the experimental characterization or the atomistic simulation with a spectral model. We thus conclude that grain boundary segregation of Y is independent of grain boundary misorientation angle. |
| format | Article |
| id | doaj-art-e8ce5fd17b5b43afad74e888d7d773bf |
| institution | DOAJ |
| issn | 2213-9567 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj-art-e8ce5fd17b5b43afad74e888d7d773bf2025-08-20T03:12:28ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672025-06-011362509252110.1016/j.jma.2025.04.030Experimental characterization and atomistic simulation of grain boundary segregation in Mg-Y alloysQianying Shi0Vaidehi Menon1Liang Qi2John Allison3Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109; Corresponding author.Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109; Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109As a rare earth solute element in Mg alloys, Y has the beneficial effects of increasing both the strength and the ductility as well as weakening the crystallographic texture. To achieve a more fundamental understanding on how Y addition affects the microstructural evolution and mechanical properties, the Y segregation behavior at grain boundaries was investigated in Mg-1wt.%Y and Mg-7wt.%Y alloys at different conditions. The segregation intensity and its dependence on the grain boundary misorientation angle were experimentally characterized and computationally predicted. Strong segregation at grain boundaries was observed in both low and high Y-containing alloys. Y segregation was found to remain in alloy Mg-7Y after high-temperature annealing heat treatment at 540 °C. No direct correlation between the Y segregation intensity and the grain boundary misorientation angle could be established based on either the experimental characterization or the atomistic simulation with a spectral model. We thus conclude that grain boundary segregation of Y is independent of grain boundary misorientation angle.http://www.sciencedirect.com/science/article/pii/S2213956725001604Mg-RE alloyYttriumGrain boundarySegregation |
| spellingShingle | Qianying Shi Vaidehi Menon Liang Qi John Allison Experimental characterization and atomistic simulation of grain boundary segregation in Mg-Y alloys Journal of Magnesium and Alloys Mg-RE alloy Yttrium Grain boundary Segregation |
| title | Experimental characterization and atomistic simulation of grain boundary segregation in Mg-Y alloys |
| title_full | Experimental characterization and atomistic simulation of grain boundary segregation in Mg-Y alloys |
| title_fullStr | Experimental characterization and atomistic simulation of grain boundary segregation in Mg-Y alloys |
| title_full_unstemmed | Experimental characterization and atomistic simulation of grain boundary segregation in Mg-Y alloys |
| title_short | Experimental characterization and atomistic simulation of grain boundary segregation in Mg-Y alloys |
| title_sort | experimental characterization and atomistic simulation of grain boundary segregation in mg y alloys |
| topic | Mg-RE alloy Yttrium Grain boundary Segregation |
| url | http://www.sciencedirect.com/science/article/pii/S2213956725001604 |
| work_keys_str_mv | AT qianyingshi experimentalcharacterizationandatomisticsimulationofgrainboundarysegregationinmgyalloys AT vaidehimenon experimentalcharacterizationandatomisticsimulationofgrainboundarysegregationinmgyalloys AT liangqi experimentalcharacterizationandatomisticsimulationofgrainboundarysegregationinmgyalloys AT johnallison experimentalcharacterizationandatomisticsimulationofgrainboundarysegregationinmgyalloys |