Deformation behavior of LPSO phases, grain refinement mechanism, and texture evolution of a Mg-Gd-Y-Zn-Zr alloy processed by forward extrusion combined with dual-directional angular deformation
In this study, a Mg-Gd-Y-Zn-Zr alloy was processed by forward extrusion combined with dual-directional angular extrusion (FE-DDAE), and the corresponding microstructure evolution, grain refinement mechanism, and texture were investigated systematically. The deformed materials were subjected to a com...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424000322 |
| _version_ | 1797338296076992512 |
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| author | Zhaoming Yan Luyao Li Jiaxuan Zhu Luying Ren Yong Xue Qiang Wang Zhimin Zhang |
| author_facet | Zhaoming Yan Luyao Li Jiaxuan Zhu Luying Ren Yong Xue Qiang Wang Zhimin Zhang |
| author_sort | Zhaoming Yan |
| collection | DOAJ |
| description | In this study, a Mg-Gd-Y-Zn-Zr alloy was processed by forward extrusion combined with dual-directional angular extrusion (FE-DDAE), and the corresponding microstructure evolution, grain refinement mechanism, and texture were investigated systematically. The deformed materials were subjected to a combination of three-way compressive stress and shear stress, and five different areas were selected to study the typical deformation behaviors. The results show that microstructures are heterogeneous in different areas, and the grain size is refined from 138.70 μm to 37.18 μm through continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX). The block-shaped and lamellar long period stacking ordered (LPSO) phases can coordinate severe deformation through dissolution, tearing, breaking for the former, and bending, severe kinking, refining into small pieces for the latter. Moreover, the broken block-shaped LPSO can promote DRX process through particle-stimulated nucleation (PSN) mechanism, and the lamellar LPSO phases can hinder the dislocation motion to restrict DRX. A strong basal texture is observed during the initial stage of FE-DDAE process, and the basal texture intensity gradually weakens to 4.9 MRD due to the random orientations of high volume fraction of DRX grains. A mixed texture component is formed with basal planes inclined 50° from ED to TD, showing a trend of spreading. |
| first_indexed | 2024-03-08T09:27:56Z |
| format | Article |
| id | doaj.art-82bfe344c65348b2b991666fb8bb34d4 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-08T09:27:56Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-82bfe344c65348b2b991666fb8bb34d42024-01-31T05:44:35ZengElsevierJournal of Materials Research and Technology2238-78542024-01-012841314141Deformation behavior of LPSO phases, grain refinement mechanism, and texture evolution of a Mg-Gd-Y-Zn-Zr alloy processed by forward extrusion combined with dual-directional angular deformationZhaoming Yan0Luyao Li1Jiaxuan Zhu2Luying Ren3Yong Xue4Qiang Wang5Zhimin Zhang6School of Materials Science and Engineering, North University of China, Taiyuan, 030051, China; College of Missile Engineering, Rocket Force University of Engineering, Xi'an, 710025, China; Engineering Research Center for Magnesium-base Material Processing Technology, Ministry of Education, North University of China, Taiyuan, 030051, China; Corresponding author. School of Materials Science and Engineering, North University of China, Taiyuan, 030051, China.School of Materials Science and Engineering, North University of China, Taiyuan, 030051, ChinaResearch Institute of Intelligent Weapons, North University of China, Taiyuan, 030051, ChinaBeijing Institute of Aerospace Information, Beijing, 100854, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan, 030051, China; Engineering Research Center for Magnesium-base Material Processing Technology, Ministry of Education, North University of China, Taiyuan, 030051, China; Corresponding author. School of Materials Science and Engineering, North University of China, Taiyuan, 030051, China.School of Materials Science and Engineering, North University of China, Taiyuan, 030051, China; Engineering Research Center for Magnesium-base Material Processing Technology, Ministry of Education, North University of China, Taiyuan, 030051, ChinaSchool of Materials Science and Engineering, North University of China, Taiyuan, 030051, China; Engineering Research Center for Magnesium-base Material Processing Technology, Ministry of Education, North University of China, Taiyuan, 030051, ChinaIn this study, a Mg-Gd-Y-Zn-Zr alloy was processed by forward extrusion combined with dual-directional angular extrusion (FE-DDAE), and the corresponding microstructure evolution, grain refinement mechanism, and texture were investigated systematically. The deformed materials were subjected to a combination of three-way compressive stress and shear stress, and five different areas were selected to study the typical deformation behaviors. The results show that microstructures are heterogeneous in different areas, and the grain size is refined from 138.70 μm to 37.18 μm through continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX). The block-shaped and lamellar long period stacking ordered (LPSO) phases can coordinate severe deformation through dissolution, tearing, breaking for the former, and bending, severe kinking, refining into small pieces for the latter. Moreover, the broken block-shaped LPSO can promote DRX process through particle-stimulated nucleation (PSN) mechanism, and the lamellar LPSO phases can hinder the dislocation motion to restrict DRX. A strong basal texture is observed during the initial stage of FE-DDAE process, and the basal texture intensity gradually weakens to 4.9 MRD due to the random orientations of high volume fraction of DRX grains. A mixed texture component is formed with basal planes inclined 50° from ED to TD, showing a trend of spreading.http://www.sciencedirect.com/science/article/pii/S2238785424000322Mg-Gd-Y-Zn-Zr alloyFE-DAAE processMicrostructureGrain refinementTexture evolution |
| spellingShingle | Zhaoming Yan Luyao Li Jiaxuan Zhu Luying Ren Yong Xue Qiang Wang Zhimin Zhang Deformation behavior of LPSO phases, grain refinement mechanism, and texture evolution of a Mg-Gd-Y-Zn-Zr alloy processed by forward extrusion combined with dual-directional angular deformation Journal of Materials Research and Technology Mg-Gd-Y-Zn-Zr alloy FE-DAAE process Microstructure Grain refinement Texture evolution |
| title | Deformation behavior of LPSO phases, grain refinement mechanism, and texture evolution of a Mg-Gd-Y-Zn-Zr alloy processed by forward extrusion combined with dual-directional angular deformation |
| title_full | Deformation behavior of LPSO phases, grain refinement mechanism, and texture evolution of a Mg-Gd-Y-Zn-Zr alloy processed by forward extrusion combined with dual-directional angular deformation |
| title_fullStr | Deformation behavior of LPSO phases, grain refinement mechanism, and texture evolution of a Mg-Gd-Y-Zn-Zr alloy processed by forward extrusion combined with dual-directional angular deformation |
| title_full_unstemmed | Deformation behavior of LPSO phases, grain refinement mechanism, and texture evolution of a Mg-Gd-Y-Zn-Zr alloy processed by forward extrusion combined with dual-directional angular deformation |
| title_short | Deformation behavior of LPSO phases, grain refinement mechanism, and texture evolution of a Mg-Gd-Y-Zn-Zr alloy processed by forward extrusion combined with dual-directional angular deformation |
| title_sort | deformation behavior of lpso phases grain refinement mechanism and texture evolution of a mg gd y zn zr alloy processed by forward extrusion combined with dual directional angular deformation |
| topic | Mg-Gd-Y-Zn-Zr alloy FE-DAAE process Microstructure Grain refinement Texture evolution |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424000322 |
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