A novel continues multi-shear extrusion process on the microstructure and mechanical property evolution of AZ31 magnesium alloys
This study presents a novel technology in the fabrication of AZ31 Mg alloy sheets using continuous shear extrusion (CSE) with multiple shear platforms at 340 °C. Compared with the conventional extrusion (CE), an asymmetric shear deformation was introduced so that the basal texture deflects towards t...
| 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/S2238785423029630 |
| _version_ | 1797338375436369920 |
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| author | Jianzhong He Lifei Wang Hong-Hui Wu Yongqiao Li Dabiao Xia Hongxia Wang Xiaoye Zhou Qiang Zhang Qingshan Yang Kwang Seon Shin |
| author_facet | Jianzhong He Lifei Wang Hong-Hui Wu Yongqiao Li Dabiao Xia Hongxia Wang Xiaoye Zhou Qiang Zhang Qingshan Yang Kwang Seon Shin |
| author_sort | Jianzhong He |
| collection | DOAJ |
| description | This study presents a novel technology in the fabrication of AZ31 Mg alloy sheets using continuous shear extrusion (CSE) with multiple shear platforms at 340 °C. Compared with the conventional extrusion (CE), an asymmetric shear deformation was introduced so that the basal texture deflects towards to extrusion direction. Through finite element simulation, it was found that the differences in flow velocity and strain distributions along the thickness direction can be achieved by introducing the shear strain through CSE technology. Finer grains and more uniform microstructure were obtained in CSEed Mg samples compared to conventional extrusion. The average grain size decreased from 6.33 μm in CE samples to 3.94 μm in CSE samples, and 3.39 μm in CSE-II samples. The continuous asymmetric shear force also led to the basal plane inclining approximately 15° towards the extrusion direction, leading to a weakening of basal texture intensity. In terms of mechanical properties, the CSE Mg plates exhibited higher yield strength (YS), ultimate tensile strength (UTS), and fracture elongation (FE) along the extrusion direction. These improvements in mechanical performance can be attributed to enhanced work hardening ability, texture weakening, finer grains generation, and the dislocation strengthening induced by shear strain. |
| first_indexed | 2024-03-08T09:30:16Z |
| format | Article |
| id | doaj.art-b47ff111ca334c6292264fc3b5e5a6b9 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-08T09:30:16Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-b47ff111ca334c6292264fc3b5e5a6b92024-01-31T05:43:06ZengElsevierJournal of Materials Research and Technology2238-78542024-01-0128176198A novel continues multi-shear extrusion process on the microstructure and mechanical property evolution of AZ31 magnesium alloysJianzhong He0Lifei Wang1Hong-Hui Wu2Yongqiao Li3Dabiao Xia4Hongxia Wang5Xiaoye Zhou6Qiang Zhang7Qingshan Yang8Kwang Seon Shin9College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, ChinaCollege of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, China; Research Institute of Advanced Materials, Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea; Corresponding author.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Corresponding author.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, ChinaJihua Laboratory, Foshan, 528000, ChinaCollege of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, ChinaDepartment of Materials Science and Engineering, Shenzhen MSU-BIT University, Shenzhen, 518172, ChinaCollege of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, ChinaSchool of Metallurgy and Material Engineering, Chongqing University of Science and Technology, Chongqing, 401331, ChinaResearch Institute of Advanced Materials, Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea; Corresponding author.This study presents a novel technology in the fabrication of AZ31 Mg alloy sheets using continuous shear extrusion (CSE) with multiple shear platforms at 340 °C. Compared with the conventional extrusion (CE), an asymmetric shear deformation was introduced so that the basal texture deflects towards to extrusion direction. Through finite element simulation, it was found that the differences in flow velocity and strain distributions along the thickness direction can be achieved by introducing the shear strain through CSE technology. Finer grains and more uniform microstructure were obtained in CSEed Mg samples compared to conventional extrusion. The average grain size decreased from 6.33 μm in CE samples to 3.94 μm in CSE samples, and 3.39 μm in CSE-II samples. The continuous asymmetric shear force also led to the basal plane inclining approximately 15° towards the extrusion direction, leading to a weakening of basal texture intensity. In terms of mechanical properties, the CSE Mg plates exhibited higher yield strength (YS), ultimate tensile strength (UTS), and fracture elongation (FE) along the extrusion direction. These improvements in mechanical performance can be attributed to enhanced work hardening ability, texture weakening, finer grains generation, and the dislocation strengthening induced by shear strain.http://www.sciencedirect.com/science/article/pii/S2238785423029630Continuous shear extrusionGrain refinementTexture weakeningMechanical propertyMicrostructure evolution |
| spellingShingle | Jianzhong He Lifei Wang Hong-Hui Wu Yongqiao Li Dabiao Xia Hongxia Wang Xiaoye Zhou Qiang Zhang Qingshan Yang Kwang Seon Shin A novel continues multi-shear extrusion process on the microstructure and mechanical property evolution of AZ31 magnesium alloys Journal of Materials Research and Technology Continuous shear extrusion Grain refinement Texture weakening Mechanical property Microstructure evolution |
| title | A novel continues multi-shear extrusion process on the microstructure and mechanical property evolution of AZ31 magnesium alloys |
| title_full | A novel continues multi-shear extrusion process on the microstructure and mechanical property evolution of AZ31 magnesium alloys |
| title_fullStr | A novel continues multi-shear extrusion process on the microstructure and mechanical property evolution of AZ31 magnesium alloys |
| title_full_unstemmed | A novel continues multi-shear extrusion process on the microstructure and mechanical property evolution of AZ31 magnesium alloys |
| title_short | A novel continues multi-shear extrusion process on the microstructure and mechanical property evolution of AZ31 magnesium alloys |
| title_sort | novel continues multi shear extrusion process on the microstructure and mechanical property evolution of az31 magnesium alloys |
| topic | Continuous shear extrusion Grain refinement Texture weakening Mechanical property Microstructure evolution |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423029630 |
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