Microstructure Evolution and Dynamic Recrystallization Behavior of Mg-Gd-Y-Zn-Zr Alloy during Rotating Backward Extrusion
Rotating backward extrusion (RBE) is one of severe plastic deformation (SPD) methods used to produce cylindrical components with a very large strain by a single pass. In this study, the microstructure and texture evolution in the different regions of Mg-12Gd-4Y-2Zn-0.5Zr (wt.%) alloys via RBE proces...
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MDPI AG
2022-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/3/1057 |
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| author | Yali Duan Jianmin Yu Beibei Dong Huifang Zhang Mu Meng Mei Cheng Zhimin Zhang Baohong Zhang Hongyuan Hao Ping Xu Huiling Liu |
| author_facet | Yali Duan Jianmin Yu Beibei Dong Huifang Zhang Mu Meng Mei Cheng Zhimin Zhang Baohong Zhang Hongyuan Hao Ping Xu Huiling Liu |
| author_sort | Yali Duan |
| collection | DOAJ |
| description | Rotating backward extrusion (RBE) is one of severe plastic deformation (SPD) methods used to produce cylindrical components with a very large strain by a single pass. In this study, the microstructure and texture evolution in the different regions of Mg-12Gd-4Y-2Zn-0.5Zr (wt.%) alloys via RBE process were investigated by using optical microscopy (OM), X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron back-scatter diffraction (EBSD). The results showed that the cup-shaped sample formed by RBE process exhibited typical gradient microstructure expanding from its inner wall to outer wall along the radial direction (RD). The average grain size of the RBEed sample decreased when the radius decreased from the edge region to the center region along the RD, which was attributed to the different strains and strain rates in the different regions. It also could be observed that the center region showed highest deformation and the edge region exhibited the lowest deformation in the RBEed sample along the RD. In addition, the grain refinement mechanisms of the experimental alloy containing long-period stacking ordered (LPSO) phases after RBE with 100 N were continuous dynamic recrystallization (CDRX), discontinuous dynamic recrystallization (DDRX) and particle stimulated nucleation (PSN). |
| first_indexed | 2024-03-09T23:36:09Z |
| format | Article |
| id | doaj.art-8974b788f5e84d2ea169d11b53bb029b |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T23:36:09Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-8974b788f5e84d2ea169d11b53bb029b2023-11-23T17:01:35ZengMDPI AGMaterials1996-19442022-01-01153105710.3390/ma15031057Microstructure Evolution and Dynamic Recrystallization Behavior of Mg-Gd-Y-Zn-Zr Alloy during Rotating Backward ExtrusionYali Duan0Jianmin Yu1Beibei Dong2Huifang Zhang3Mu Meng4Mei Cheng5Zhimin Zhang6Baohong Zhang7Hongyuan Hao8Ping Xu9Huiling Liu10College of Materials Science and Engineering, North University of China, 3 Xueyuan Road, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, 3 Xueyuan Road, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, 3 Xueyuan Road, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, 3 Xueyuan Road, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, 3 Xueyuan Road, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, 3 Xueyuan Road, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, 3 Xueyuan Road, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, 3 Xueyuan Road, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, 3 Xueyuan Road, Taiyuan 030051, ChinaNorinco Group Air Ammunition Research Institute Co., Ltd., Harbin 150030, ChinaMechanics Institute, Jinzhong University, Jinzhong 030619, ChinaRotating backward extrusion (RBE) is one of severe plastic deformation (SPD) methods used to produce cylindrical components with a very large strain by a single pass. In this study, the microstructure and texture evolution in the different regions of Mg-12Gd-4Y-2Zn-0.5Zr (wt.%) alloys via RBE process were investigated by using optical microscopy (OM), X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron back-scatter diffraction (EBSD). The results showed that the cup-shaped sample formed by RBE process exhibited typical gradient microstructure expanding from its inner wall to outer wall along the radial direction (RD). The average grain size of the RBEed sample decreased when the radius decreased from the edge region to the center region along the RD, which was attributed to the different strains and strain rates in the different regions. It also could be observed that the center region showed highest deformation and the edge region exhibited the lowest deformation in the RBEed sample along the RD. In addition, the grain refinement mechanisms of the experimental alloy containing long-period stacking ordered (LPSO) phases after RBE with 100 N were continuous dynamic recrystallization (CDRX), discontinuous dynamic recrystallization (DDRX) and particle stimulated nucleation (PSN).https://www.mdpi.com/1996-1944/15/3/1057magnesium alloysgradient structuretexture evolutionrotation backward extrusion (RBE)dynamic recrystallization (DRX) |
| spellingShingle | Yali Duan Jianmin Yu Beibei Dong Huifang Zhang Mu Meng Mei Cheng Zhimin Zhang Baohong Zhang Hongyuan Hao Ping Xu Huiling Liu Microstructure Evolution and Dynamic Recrystallization Behavior of Mg-Gd-Y-Zn-Zr Alloy during Rotating Backward Extrusion Materials magnesium alloys gradient structure texture evolution rotation backward extrusion (RBE) dynamic recrystallization (DRX) |
| title | Microstructure Evolution and Dynamic Recrystallization Behavior of Mg-Gd-Y-Zn-Zr Alloy during Rotating Backward Extrusion |
| title_full | Microstructure Evolution and Dynamic Recrystallization Behavior of Mg-Gd-Y-Zn-Zr Alloy during Rotating Backward Extrusion |
| title_fullStr | Microstructure Evolution and Dynamic Recrystallization Behavior of Mg-Gd-Y-Zn-Zr Alloy during Rotating Backward Extrusion |
| title_full_unstemmed | Microstructure Evolution and Dynamic Recrystallization Behavior of Mg-Gd-Y-Zn-Zr Alloy during Rotating Backward Extrusion |
| title_short | Microstructure Evolution and Dynamic Recrystallization Behavior of Mg-Gd-Y-Zn-Zr Alloy during Rotating Backward Extrusion |
| title_sort | microstructure evolution and dynamic recrystallization behavior of mg gd y zn zr alloy during rotating backward extrusion |
| topic | magnesium alloys gradient structure texture evolution rotation backward extrusion (RBE) dynamic recrystallization (DRX) |
| url | https://www.mdpi.com/1996-1944/15/3/1057 |
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