Dynamic recrystallization and twinning behavior of magnesium alloy during hot tension
In this study, {10–12} tensile twins (TTs) were induced in hot-rolled AZ31 Mg sheets via hot tension along the normal direction. The results demonstrate that the volume fraction of TTs at 2 mm/min is greatly lower than their counterparts at 0.5 mm/min at 100 °C and 200 °C. Dynamic recrystallization...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423010220 |
| _version_ | 1797798776352538624 |
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| author | Xiong Xu Huihui Nie Jun Zhou Hongyang Zhang Zhijian Li Yangyang Yang Hongsheng Chen Tiantian Yang |
| author_facet | Xiong Xu Huihui Nie Jun Zhou Hongyang Zhang Zhijian Li Yangyang Yang Hongsheng Chen Tiantian Yang |
| author_sort | Xiong Xu |
| collection | DOAJ |
| description | In this study, {10–12} tensile twins (TTs) were induced in hot-rolled AZ31 Mg sheets via hot tension along the normal direction. The results demonstrate that the volume fraction of TTs at 2 mm/min is greatly lower than their counterparts at 0.5 mm/min at 100 °C and 200 °C. Dynamic recrystallization (DRX) can decrease twin nucleation rate during hot tensile when the strain rate reaches 2 mm/min. Decrease in critical resolved shear stress of non-basal slips at 200 °C enhances the deformation capability among grains, which dramatically reduces the volume fraction of TTs. Hence, TTs are hardly observed in 200°C-2mm/min sample. Tensile temperature significantly affects the morphology of TT lamellae. Grain boundaries prevents the longitudinal growth of the TTs, and then the thickness of TTs begins to grow to coordinate the deformation, resulting in fine TT lamellae in 100°C-0.5 mm/min. Compared with AR, the basal texture intensity of 100°C-2mm/min and 200°C-2mm/min increases and the occurrence of DRX is the main reason, while basal texture weakening of 100°C-0.5 mm/min and 200°C-0.5 mm/min depends on the formation of TTs. Compared with samples at 200 °C, the samples at 100 °C have higher tensile stresses. The maximum stress of 100°C-0.5 mm/min is 64.97 MPa when tensile strain reaches 0.15 owing to its highest dislocation density. 200°C-2mm/min possesses the highest hardness among the four tension samples, which is associated with the largest fraction of DRXed grains (68.8%) and its refinement strengthening effect. Dislocation strengthening exerts more influence on the hardness of 100°C-0.5 mm/min. |
| first_indexed | 2024-03-13T04:08:57Z |
| format | Article |
| id | doaj.art-fa5db4e89083452389e7d1ebcd9e9caa |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:08:57Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-fa5db4e89083452389e7d1ebcd9e9caa2023-06-21T06:57:35ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012472707282Dynamic recrystallization and twinning behavior of magnesium alloy during hot tensionXiong Xu0Huihui Nie1Jun Zhou2Hongyang Zhang3Zhijian Li4Yangyang Yang5Hongsheng Chen6Tiantian Yang7College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China; Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment, Taiyuan, 030024, ChinaCollege of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China; Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment, Taiyuan, 030024, China; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, PR China; Corresponding author.Department of Mechanical Engineering, Pennsylvania State University, The Behrend College, Erie, PA, 16563, USACollege of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China; Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment, Taiyuan, 030024, ChinaCollege of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China; Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment, Taiyuan, 030024, ChinaCollege of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China; Shanxi Key Laboratory of Intelligent Underwater Equipment, Taiyuan University of Technology, Taiyuan 030024, PR ChinaCollege of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China; Shanxi Key Laboratory of Intelligent Underwater Equipment, Taiyuan University of Technology, Taiyuan 030024, PR ChinaCollege of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China; Corresponding author.In this study, {10–12} tensile twins (TTs) were induced in hot-rolled AZ31 Mg sheets via hot tension along the normal direction. The results demonstrate that the volume fraction of TTs at 2 mm/min is greatly lower than their counterparts at 0.5 mm/min at 100 °C and 200 °C. Dynamic recrystallization (DRX) can decrease twin nucleation rate during hot tensile when the strain rate reaches 2 mm/min. Decrease in critical resolved shear stress of non-basal slips at 200 °C enhances the deformation capability among grains, which dramatically reduces the volume fraction of TTs. Hence, TTs are hardly observed in 200°C-2mm/min sample. Tensile temperature significantly affects the morphology of TT lamellae. Grain boundaries prevents the longitudinal growth of the TTs, and then the thickness of TTs begins to grow to coordinate the deformation, resulting in fine TT lamellae in 100°C-0.5 mm/min. Compared with AR, the basal texture intensity of 100°C-2mm/min and 200°C-2mm/min increases and the occurrence of DRX is the main reason, while basal texture weakening of 100°C-0.5 mm/min and 200°C-0.5 mm/min depends on the formation of TTs. Compared with samples at 200 °C, the samples at 100 °C have higher tensile stresses. The maximum stress of 100°C-0.5 mm/min is 64.97 MPa when tensile strain reaches 0.15 owing to its highest dislocation density. 200°C-2mm/min possesses the highest hardness among the four tension samples, which is associated with the largest fraction of DRXed grains (68.8%) and its refinement strengthening effect. Dislocation strengthening exerts more influence on the hardness of 100°C-0.5 mm/min.http://www.sciencedirect.com/science/article/pii/S2238785423010220Mg alloy{10−12} twinningStrain rateDRXHot tensile |
| spellingShingle | Xiong Xu Huihui Nie Jun Zhou Hongyang Zhang Zhijian Li Yangyang Yang Hongsheng Chen Tiantian Yang Dynamic recrystallization and twinning behavior of magnesium alloy during hot tension Journal of Materials Research and Technology Mg alloy {10−12} twinning Strain rate DRX Hot tensile |
| title | Dynamic recrystallization and twinning behavior of magnesium alloy during hot tension |
| title_full | Dynamic recrystallization and twinning behavior of magnesium alloy during hot tension |
| title_fullStr | Dynamic recrystallization and twinning behavior of magnesium alloy during hot tension |
| title_full_unstemmed | Dynamic recrystallization and twinning behavior of magnesium alloy during hot tension |
| title_short | Dynamic recrystallization and twinning behavior of magnesium alloy during hot tension |
| title_sort | dynamic recrystallization and twinning behavior of magnesium alloy during hot tension |
| topic | Mg alloy {10−12} twinning Strain rate DRX Hot tensile |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423010220 |
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