Dynamic recrystallization and precipitation in an Al–Mg–Sc alloy: effect of strain rate
Al–Mg–Sc alloy ingots were compressed 80% at different strain rates (1/s, 0.01/s and 0.0001/s) and different temperatures (300 °C and 450 °C). The microstructure was characterized by SEM, EBSD, XRD and TEM. The EBSD results show that the samples with a deformation rate of 0.01/s have the largest num...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422007931 |
| _version_ | 1811188854722396160 |
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| author | Jingyu Jiang Feng Jiang Menghan Zhang |
| author_facet | Jingyu Jiang Feng Jiang Menghan Zhang |
| author_sort | Jingyu Jiang |
| collection | DOAJ |
| description | Al–Mg–Sc alloy ingots were compressed 80% at different strain rates (1/s, 0.01/s and 0.0001/s) and different temperatures (300 °C and 450 °C). The microstructure was characterized by SEM, EBSD, XRD and TEM. The EBSD results show that the samples with a deformation rate of 0.01/s have the largest number of tiny equiaxed grains at the grain boundaries, but the equiaxed grains in the 0.0001/s sample are less and larger. This indicates that the number of new equiaxed grains does not always increase with decreasing strain rate. Furthermore, the TEM results confirmed that the recrystallization mechanism with a strain rate of 0.0001/s is similar to in situ recrystallization. The XRD results show that with the increase of temperature and the decrease of strain rate, there are fewer dislocations in the samples after thermal deformation. The particle stimulated recrystallization is also different in the 0.01/s sample and the 0.0001/s sample. Furthermore, at a strain rate of 0.0001/s, a large number of fine Al3(Sc,Zr) particles appear, which is due to the dynamic precipitation during slow thermal deformation. |
| first_indexed | 2024-04-11T14:26:14Z |
| format | Article |
| id | doaj.art-14f73560de5c4ae48f5a29be59da56ef |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-11T14:26:14Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-14f73560de5c4ae48f5a29be59da56ef2022-12-22T04:18:51ZengElsevierJournal of Materials Research and Technology2238-78542022-07-011914441456Dynamic recrystallization and precipitation in an Al–Mg–Sc alloy: effect of strain rateJingyu Jiang0Feng Jiang1Menghan Zhang2School of Metallurgy and Environment, Central South University, Changsha 410083, ChinaSchool of Material Science and Engineering, Central South University, Changsha 410083, China; Light Alloy Research Institute, Central South University, Changsha 410083, China; The National Key Laboratory of Science and Technology on High-Strength Lightweight Structural Materials, Central South University, Changsha 410083, China; Corresponding author.School of Material Science and Engineering, Central South University, Changsha 410083, China; Corresponding author.Al–Mg–Sc alloy ingots were compressed 80% at different strain rates (1/s, 0.01/s and 0.0001/s) and different temperatures (300 °C and 450 °C). The microstructure was characterized by SEM, EBSD, XRD and TEM. The EBSD results show that the samples with a deformation rate of 0.01/s have the largest number of tiny equiaxed grains at the grain boundaries, but the equiaxed grains in the 0.0001/s sample are less and larger. This indicates that the number of new equiaxed grains does not always increase with decreasing strain rate. Furthermore, the TEM results confirmed that the recrystallization mechanism with a strain rate of 0.0001/s is similar to in situ recrystallization. The XRD results show that with the increase of temperature and the decrease of strain rate, there are fewer dislocations in the samples after thermal deformation. The particle stimulated recrystallization is also different in the 0.01/s sample and the 0.0001/s sample. Furthermore, at a strain rate of 0.0001/s, a large number of fine Al3(Sc,Zr) particles appear, which is due to the dynamic precipitation during slow thermal deformation.http://www.sciencedirect.com/science/article/pii/S2238785422007931Al–Mg–Sc alloySlow hot deformationRecrystallizationAl3(Sc, Zr) precipitation |
| spellingShingle | Jingyu Jiang Feng Jiang Menghan Zhang Dynamic recrystallization and precipitation in an Al–Mg–Sc alloy: effect of strain rate Journal of Materials Research and Technology Al–Mg–Sc alloy Slow hot deformation Recrystallization Al3(Sc, Zr) precipitation |
| title | Dynamic recrystallization and precipitation in an Al–Mg–Sc alloy: effect of strain rate |
| title_full | Dynamic recrystallization and precipitation in an Al–Mg–Sc alloy: effect of strain rate |
| title_fullStr | Dynamic recrystallization and precipitation in an Al–Mg–Sc alloy: effect of strain rate |
| title_full_unstemmed | Dynamic recrystallization and precipitation in an Al–Mg–Sc alloy: effect of strain rate |
| title_short | Dynamic recrystallization and precipitation in an Al–Mg–Sc alloy: effect of strain rate |
| title_sort | dynamic recrystallization and precipitation in an al mg sc alloy effect of strain rate |
| topic | Al–Mg–Sc alloy Slow hot deformation Recrystallization Al3(Sc, Zr) precipitation |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422007931 |
| work_keys_str_mv | AT jingyujiang dynamicrecrystallizationandprecipitationinanalmgscalloyeffectofstrainrate AT fengjiang dynamicrecrystallizationandprecipitationinanalmgscalloyeffectofstrainrate AT menghanzhang dynamicrecrystallizationandprecipitationinanalmgscalloyeffectofstrainrate |