The evolution of microstructure and texture of AZ80 and AZ80-LaMM magnesium alloy wheel hubs processed by single-pass radial forging
In this paper, 1.5 wt% La-rich Mish Metal (LaMM) was added to AZ80 magnesium alloy, and microstructure evolution, texture development of AZ80 wheel hub were studied by single-pass radial forging, so as to provide basic data for the preparation of magnesium alloy wheel hub with uniform microstructure...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422019949 |
| _version_ | 1797942996477411328 |
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| author | Qiyu Liao Yanchao Jiang Qichi Le Wenxin Hu Xiong Zhou Dandan Li Yinglong Li |
| author_facet | Qiyu Liao Yanchao Jiang Qichi Le Wenxin Hu Xiong Zhou Dandan Li Yinglong Li |
| author_sort | Qiyu Liao |
| collection | DOAJ |
| description | In this paper, 1.5 wt% La-rich Mish Metal (LaMM) was added to AZ80 magnesium alloy, and microstructure evolution, texture development of AZ80 wheel hub were studied by single-pass radial forging, so as to provide basic data for the preparation of magnesium alloy wheel hub with uniform microstructure and excellent mechanical properties. A detailed microstructure analysis was performed using the optical microscopy (OM) and electron back-scatter diffraction (EBSD). The result shows that the LaMM greatly improves the refinement ability and deformation uniformity of AZ80 wheel hub, and the volume fraction of DRX is greatly increased, which is attributed to the increase of recrystallized nucleation cores in the RE (rare earth) phase bands through the effect of particle stimulated nucleation (PSN). The texture of the wheel hub is gradually weakened along the forming direction due to the increasing strain and dynamic recrystallization (DRX) degree. The larger cumulative strain can promote the activation of the non-basal slip systems and the generation of dislocations, which ultimately promotes the emergence of dynamic recrystallized (DRXed) grains and weakens the texture. The texture of AZ80 wheel hub is weakened by LaMM, which changes the DRX mechanism of spokes and lower rim part, promotes the occurrence of DRX, and produces more non-basal slip. Some of the grains are biased towards the basal plane, which is more conducive to grain slip, while the other DRXed grains are also deflected due to non-basal plane slip. The hardness values of AZ80-LaMM wheel hub are larger and more uniform than those of AZ80 wheel hub. This can be attributed to the fact that the RE phases inhibit the grain growth, keep the microstructure stable and produce better grain refinement. |
| first_indexed | 2024-04-10T20:17:01Z |
| format | Article |
| id | doaj.art-1aae97d24fbb44378f9b730694815277 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-10T20:17:01Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-1aae97d24fbb44378f9b7306948152772023-01-26T04:46:27ZengElsevierJournal of Materials Research and Technology2238-78542023-01-012224732488The evolution of microstructure and texture of AZ80 and AZ80-LaMM magnesium alloy wheel hubs processed by single-pass radial forgingQiyu Liao0Yanchao Jiang1Qichi Le2Wenxin Hu3Xiong Zhou4Dandan Li5Yinglong Li6School of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR China; Corresponding author.Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, PR ChinaKey Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, PR China; Corresponding author.Baotou Research Institute of Rare Earths, Baotou, 014000, PR ChinaKey Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, PR ChinaKey Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, PR ChinaSchool of Materials Science and Engineering, Northeastern University, Shenyang 110819, PR ChinaIn this paper, 1.5 wt% La-rich Mish Metal (LaMM) was added to AZ80 magnesium alloy, and microstructure evolution, texture development of AZ80 wheel hub were studied by single-pass radial forging, so as to provide basic data for the preparation of magnesium alloy wheel hub with uniform microstructure and excellent mechanical properties. A detailed microstructure analysis was performed using the optical microscopy (OM) and electron back-scatter diffraction (EBSD). The result shows that the LaMM greatly improves the refinement ability and deformation uniformity of AZ80 wheel hub, and the volume fraction of DRX is greatly increased, which is attributed to the increase of recrystallized nucleation cores in the RE (rare earth) phase bands through the effect of particle stimulated nucleation (PSN). The texture of the wheel hub is gradually weakened along the forming direction due to the increasing strain and dynamic recrystallization (DRX) degree. The larger cumulative strain can promote the activation of the non-basal slip systems and the generation of dislocations, which ultimately promotes the emergence of dynamic recrystallized (DRXed) grains and weakens the texture. The texture of AZ80 wheel hub is weakened by LaMM, which changes the DRX mechanism of spokes and lower rim part, promotes the occurrence of DRX, and produces more non-basal slip. Some of the grains are biased towards the basal plane, which is more conducive to grain slip, while the other DRXed grains are also deflected due to non-basal plane slip. The hardness values of AZ80-LaMM wheel hub are larger and more uniform than those of AZ80 wheel hub. This can be attributed to the fact that the RE phases inhibit the grain growth, keep the microstructure stable and produce better grain refinement.http://www.sciencedirect.com/science/article/pii/S2238785422019949AZ80 magnesium alloyLa-rich Mish metalWheel hubMicrostructureDynamic recrystallizationTexture |
| spellingShingle | Qiyu Liao Yanchao Jiang Qichi Le Wenxin Hu Xiong Zhou Dandan Li Yinglong Li The evolution of microstructure and texture of AZ80 and AZ80-LaMM magnesium alloy wheel hubs processed by single-pass radial forging Journal of Materials Research and Technology AZ80 magnesium alloy La-rich Mish metal Wheel hub Microstructure Dynamic recrystallization Texture |
| title | The evolution of microstructure and texture of AZ80 and AZ80-LaMM magnesium alloy wheel hubs processed by single-pass radial forging |
| title_full | The evolution of microstructure and texture of AZ80 and AZ80-LaMM magnesium alloy wheel hubs processed by single-pass radial forging |
| title_fullStr | The evolution of microstructure and texture of AZ80 and AZ80-LaMM magnesium alloy wheel hubs processed by single-pass radial forging |
| title_full_unstemmed | The evolution of microstructure and texture of AZ80 and AZ80-LaMM magnesium alloy wheel hubs processed by single-pass radial forging |
| title_short | The evolution of microstructure and texture of AZ80 and AZ80-LaMM magnesium alloy wheel hubs processed by single-pass radial forging |
| title_sort | evolution of microstructure and texture of az80 and az80 lamm magnesium alloy wheel hubs processed by single pass radial forging |
| topic | AZ80 magnesium alloy La-rich Mish metal Wheel hub Microstructure Dynamic recrystallization Texture |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422019949 |
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