The Role of Long Period Stacking Ordered Phase in Dynamic Recrystallization of a Mg–Gd–Y–Zn–Zr Alloy during Multi-Directional Forging Process
The Mg–Gd–Y–Zn–Zr alloy containing a long period stacking ordered (LPSO) phase was subjected to multi-pass deformation by means of a multi-directional forging process, and the microstructure evolution and the influence of the LPSO phase on its dynamic recrystallization (DRX) were studied. The result...
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MDPI AG
2020-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/15/3290 |
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| author | Huiling Liu Yingze Meng Huisheng Yu Wenlong Xu Siyang Zhang Leichen Jia Guoqin Wu |
| author_facet | Huiling Liu Yingze Meng Huisheng Yu Wenlong Xu Siyang Zhang Leichen Jia Guoqin Wu |
| author_sort | Huiling Liu |
| collection | DOAJ |
| description | The Mg–Gd–Y–Zn–Zr alloy containing a long period stacking ordered (LPSO) phase was subjected to multi-pass deformation by means of a multi-directional forging process, and the microstructure evolution and the influence of the LPSO phase on its dynamic recrystallization (DRX) were studied. The results showed that multi-directional forging can effectively refine the grain with the DRX fraction increased, and DRXed grains lead to the decrease of the texture intensity, which can significantly improve the mechanical properties of the alloy. The different morphologies of the LPSO phase have different degrees of promotion relative to DRX behavior. The lamellar LPSO phase with kinks promoted dislocation plugging, where there could be a potential nucleation site for DRX grains. The fragmented lamellar LPSO phase promoted the DRX process through the particle-stimulated nucleation mechanism, and the block-shaped phase was more prone to stress concentration, which promoted DRX. These effects resulted in continuous grain refinement and a more uniform microstructure. |
| first_indexed | 2024-03-10T18:15:19Z |
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| id | doaj.art-b5db9c4eb6024ea7a6d017d41ef810f3 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T18:15:19Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-b5db9c4eb6024ea7a6d017d41ef810f32023-11-20T07:47:15ZengMDPI AGMaterials1996-19442020-07-011315329010.3390/ma13153290The Role of Long Period Stacking Ordered Phase in Dynamic Recrystallization of a Mg–Gd–Y–Zn–Zr Alloy during Multi-Directional Forging ProcessHuiling Liu0Yingze Meng1Huisheng Yu2Wenlong Xu3Siyang Zhang4Leichen Jia5Guoqin Wu6Mechanics Institute, Jinzhong University, Jinzhong 030619, ChinaCollege of Mechanical and Electrical Engineering, North University of China, Taiyuan 030051, ChinaSchool of Material Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Material Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Material Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Material Science and Engineering, North University of China, Taiyuan 030051, ChinaSchool of Material Science and Engineering, North University of China, Taiyuan 030051, ChinaThe Mg–Gd–Y–Zn–Zr alloy containing a long period stacking ordered (LPSO) phase was subjected to multi-pass deformation by means of a multi-directional forging process, and the microstructure evolution and the influence of the LPSO phase on its dynamic recrystallization (DRX) were studied. The results showed that multi-directional forging can effectively refine the grain with the DRX fraction increased, and DRXed grains lead to the decrease of the texture intensity, which can significantly improve the mechanical properties of the alloy. The different morphologies of the LPSO phase have different degrees of promotion relative to DRX behavior. The lamellar LPSO phase with kinks promoted dislocation plugging, where there could be a potential nucleation site for DRX grains. The fragmented lamellar LPSO phase promoted the DRX process through the particle-stimulated nucleation mechanism, and the block-shaped phase was more prone to stress concentration, which promoted DRX. These effects resulted in continuous grain refinement and a more uniform microstructure.https://www.mdpi.com/1996-1944/13/15/3290Mg–Gd–Y–Zn–Zr alloyLPSO phasemulti-directional forging processdynamic recrystallizationtexture |
| spellingShingle | Huiling Liu Yingze Meng Huisheng Yu Wenlong Xu Siyang Zhang Leichen Jia Guoqin Wu The Role of Long Period Stacking Ordered Phase in Dynamic Recrystallization of a Mg–Gd–Y–Zn–Zr Alloy during Multi-Directional Forging Process Materials Mg–Gd–Y–Zn–Zr alloy LPSO phase multi-directional forging process dynamic recrystallization texture |
| title | The Role of Long Period Stacking Ordered Phase in Dynamic Recrystallization of a Mg–Gd–Y–Zn–Zr Alloy during Multi-Directional Forging Process |
| title_full | The Role of Long Period Stacking Ordered Phase in Dynamic Recrystallization of a Mg–Gd–Y–Zn–Zr Alloy during Multi-Directional Forging Process |
| title_fullStr | The Role of Long Period Stacking Ordered Phase in Dynamic Recrystallization of a Mg–Gd–Y–Zn–Zr Alloy during Multi-Directional Forging Process |
| title_full_unstemmed | The Role of Long Period Stacking Ordered Phase in Dynamic Recrystallization of a Mg–Gd–Y–Zn–Zr Alloy during Multi-Directional Forging Process |
| title_short | The Role of Long Period Stacking Ordered Phase in Dynamic Recrystallization of a Mg–Gd–Y–Zn–Zr Alloy during Multi-Directional Forging Process |
| title_sort | role of long period stacking ordered phase in dynamic recrystallization of a mg gd y zn zr alloy during multi directional forging process |
| topic | Mg–Gd–Y–Zn–Zr alloy LPSO phase multi-directional forging process dynamic recrystallization texture |
| url | https://www.mdpi.com/1996-1944/13/15/3290 |
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