Extrusion limit diagram of Mg–5Bi–3Al–1Zn alloy and effects of extrusion parameters on its microstructures and mechanical properties
Hot-compressive tests and finite element simulations were carried out to construct an extrusion limit diagram of a Mg–5Bi–3Al–1Zn (wt.%) alloy in this work. It was observed that 310 °C became a dividing line, below which the safe extrusion zone was narrow because the stress required to induce the pl...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424004757 |
| _version_ | 1797247786940366848 |
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| author | Qinghang Wang Li Wang Jiaze Xu Haowei Zhai Yang Chen Shouxin Xia Xu Qin Yongfei Li Bin Jiang Daolun Chen |
| author_facet | Qinghang Wang Li Wang Jiaze Xu Haowei Zhai Yang Chen Shouxin Xia Xu Qin Yongfei Li Bin Jiang Daolun Chen |
| author_sort | Qinghang Wang |
| collection | DOAJ |
| description | Hot-compressive tests and finite element simulations were carried out to construct an extrusion limit diagram of a Mg–5Bi–3Al–1Zn (wt.%) alloy in this work. It was observed that 310 °C became a dividing line, below which the safe extrusion zone was narrow because the stress required to induce the plastic flow of alloy was higher than the pressure limit. Once the temperature exceeded this critical temperature, a wide safe extrusion zone controlled by the cracking limit was attained. The theoretical maximum ram extrusion speed was calculated as approximately 48 mm/s at 310 °C. No hot cracks occurred on the surface of alloys extruded at 30 and 44 mm/s; while at 56 mm/s, obvious orange peel defects were observed. Through further microstructural observation, the 44 mm/s extruded alloy exhibited a complete dynamic recrystallization structure with an average grain size of 21.9 μm, along with a relatively weak basal fiber texture (with a maximum pole intensity of 5.8) and plentiful nano-Mg3Bi2 phases. These microstructure features led to superior tensile properties (namely a tensile yield strength of 270 MPa, an ultimate tensile strength of 375 MPa and an elongation of 15%) at the high-speed extrusion. |
| first_indexed | 2024-04-24T20:04:14Z |
| format | Article |
| id | doaj.art-1fa7b74bd6bf45dc8de7990eeb6c45bc |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-24T20:04:14Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-1fa7b74bd6bf45dc8de7990eeb6c45bc2024-03-24T06:58:36ZengElsevierJournal of Materials Research and Technology2238-78542024-03-012951665179Extrusion limit diagram of Mg–5Bi–3Al–1Zn alloy and effects of extrusion parameters on its microstructures and mechanical propertiesQinghang Wang0Li Wang1Jiaze Xu2Haowei Zhai3Yang Chen4Shouxin Xia5Xu Qin6Yongfei Li7Bin Jiang8Daolun Chen9School of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, China; CITIC Dicastal Co., Ltd., Qinhuangdao, 066000, China; Corresponding author. School of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, ChinaCITIC Dicastal Co., Ltd., Qinhuangdao, 066000, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, ChinaSchool of Materials and Energy, Yunnan University, Kunming, 650599, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, ChinaSchool of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, ChinaCITIC Dicastal Co., Ltd., Qinhuangdao, 066000, ChinaNational Engineering Research Center for Magnesium Alloys, College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Chongqing Institute for Advanced Light Metals, Chongqing, 400030, ChinaDepartment of Mechanical, Industrial and Mechatronics Engineering, Toronto Metropolitan University, Toronto, ON, M5B 2K3, CanadaHot-compressive tests and finite element simulations were carried out to construct an extrusion limit diagram of a Mg–5Bi–3Al–1Zn (wt.%) alloy in this work. It was observed that 310 °C became a dividing line, below which the safe extrusion zone was narrow because the stress required to induce the plastic flow of alloy was higher than the pressure limit. Once the temperature exceeded this critical temperature, a wide safe extrusion zone controlled by the cracking limit was attained. The theoretical maximum ram extrusion speed was calculated as approximately 48 mm/s at 310 °C. No hot cracks occurred on the surface of alloys extruded at 30 and 44 mm/s; while at 56 mm/s, obvious orange peel defects were observed. Through further microstructural observation, the 44 mm/s extruded alloy exhibited a complete dynamic recrystallization structure with an average grain size of 21.9 μm, along with a relatively weak basal fiber texture (with a maximum pole intensity of 5.8) and plentiful nano-Mg3Bi2 phases. These microstructure features led to superior tensile properties (namely a tensile yield strength of 270 MPa, an ultimate tensile strength of 375 MPa and an elongation of 15%) at the high-speed extrusion.http://www.sciencedirect.com/science/article/pii/S2238785424004757Mg-5Bi–3Al–1Zn alloyExtrusion limit diagramExtrusion parameterMicrostructureMechanical properties |
| spellingShingle | Qinghang Wang Li Wang Jiaze Xu Haowei Zhai Yang Chen Shouxin Xia Xu Qin Yongfei Li Bin Jiang Daolun Chen Extrusion limit diagram of Mg–5Bi–3Al–1Zn alloy and effects of extrusion parameters on its microstructures and mechanical properties Journal of Materials Research and Technology Mg-5Bi–3Al–1Zn alloy Extrusion limit diagram Extrusion parameter Microstructure Mechanical properties |
| title | Extrusion limit diagram of Mg–5Bi–3Al–1Zn alloy and effects of extrusion parameters on its microstructures and mechanical properties |
| title_full | Extrusion limit diagram of Mg–5Bi–3Al–1Zn alloy and effects of extrusion parameters on its microstructures and mechanical properties |
| title_fullStr | Extrusion limit diagram of Mg–5Bi–3Al–1Zn alloy and effects of extrusion parameters on its microstructures and mechanical properties |
| title_full_unstemmed | Extrusion limit diagram of Mg–5Bi–3Al–1Zn alloy and effects of extrusion parameters on its microstructures and mechanical properties |
| title_short | Extrusion limit diagram of Mg–5Bi–3Al–1Zn alloy and effects of extrusion parameters on its microstructures and mechanical properties |
| title_sort | extrusion limit diagram of mg 5bi 3al 1zn alloy and effects of extrusion parameters on its microstructures and mechanical properties |
| topic | Mg-5Bi–3Al–1Zn alloy Extrusion limit diagram Extrusion parameter Microstructure Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424004757 |
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