Deformation behaviors and the related high-temperature mechanical properties of Mg–11Gd–5Y–2Zn–0.7Zr via regulating extrusion temperatures
The effects of extrusion temperatures (430, 450, 470 and 490 °C) on the microstructures and mechanical properties of Mg–11Gd–5Y–2Zn–0.7Zr (GW) alloys at room temperature (RT), 250, 300, 350 °C were systematically investigated. The dynamic precipitation of blocky and lamellar long period stacking ord...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423017416 |
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| author | Jianxin Zhou Hong Yang Xiaojun Luo Wenlong Xie Bin Jiang Zhihua Dong Jiangfeng Song Junyao Xu Guangsheng Huang Dingfei Zhang Fusheng Pan |
| author_facet | Jianxin Zhou Hong Yang Xiaojun Luo Wenlong Xie Bin Jiang Zhihua Dong Jiangfeng Song Junyao Xu Guangsheng Huang Dingfei Zhang Fusheng Pan |
| author_sort | Jianxin Zhou |
| collection | DOAJ |
| description | The effects of extrusion temperatures (430, 450, 470 and 490 °C) on the microstructures and mechanical properties of Mg–11Gd–5Y–2Zn–0.7Zr (GW) alloys at room temperature (RT), 250, 300, 350 °C were systematically investigated. The dynamic precipitation of blocky and lamellar long period stacking ordered (LPSO) phases was taken place during hot extrusion. The dominant texture changed from <10 1¯0 >//ED to <0001>//ED with increasing extrusion temperature. Tensile results indicated that the GW alloy extruded at 430 °C (GW430) exhibited the highest mechanical properties at both RT and elevated temperatures, which was ascribed to the fine dynamic recrystallized (DRXed) grains, un-DRXed grains with an orientation of <10 1¯0 >//ED, and the LPSO phase strengthening. When tensile tested below 300 °C, slips on the blocky LPSO phase and kinks of lamellar LPSO phase were the primary deformation modes, followed by grain boundary crack. At 350 °C, grain boundaries became the vulnerable sites to be activated. For GW alloys extruded at 450, 470 and 490 °C, an abnormal increase of mechanical properties was observed at 300 °C. This was due to the occurrence of multiple-slip, which showed the intersection and entanglement of dislocations and thus improving the strength of Mg matrix. |
| first_indexed | 2024-03-11T15:06:52Z |
| format | Article |
| id | doaj.art-750d5726ebba4046a7faa6d88846d3f6 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-11T15:06:52Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-750d5726ebba4046a7faa6d88846d3f62023-10-30T06:02:47ZengElsevierJournal of Materials Research and Technology2238-78542023-09-0126703719Deformation behaviors and the related high-temperature mechanical properties of Mg–11Gd–5Y–2Zn–0.7Zr via regulating extrusion temperaturesJianxin Zhou0Hong Yang1Xiaojun Luo2Wenlong Xie3Bin Jiang4Zhihua Dong5Jiangfeng Song6Junyao Xu7Guangsheng Huang8Dingfei Zhang9Fusheng Pan10National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, ChinaNational Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Corresponding author. Sha Zheng Street 174#, Sha Ping Ba District, Chongqing, China.National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, ChinaNational Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, ChinaNational Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Chongqing Institute for Advanced Light Metals, Chongqing 400030, China; Corresponding author. National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China.National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, ChinaNational Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, ChinaNational Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, ChinaNational Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, ChinaNational Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, ChinaNational Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing, 400044, China; College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; Chongqing Institute for Advanced Light Metals, Chongqing 400030, ChinaThe effects of extrusion temperatures (430, 450, 470 and 490 °C) on the microstructures and mechanical properties of Mg–11Gd–5Y–2Zn–0.7Zr (GW) alloys at room temperature (RT), 250, 300, 350 °C were systematically investigated. The dynamic precipitation of blocky and lamellar long period stacking ordered (LPSO) phases was taken place during hot extrusion. The dominant texture changed from <10 1¯0 >//ED to <0001>//ED with increasing extrusion temperature. Tensile results indicated that the GW alloy extruded at 430 °C (GW430) exhibited the highest mechanical properties at both RT and elevated temperatures, which was ascribed to the fine dynamic recrystallized (DRXed) grains, un-DRXed grains with an orientation of <10 1¯0 >//ED, and the LPSO phase strengthening. When tensile tested below 300 °C, slips on the blocky LPSO phase and kinks of lamellar LPSO phase were the primary deformation modes, followed by grain boundary crack. At 350 °C, grain boundaries became the vulnerable sites to be activated. For GW alloys extruded at 450, 470 and 490 °C, an abnormal increase of mechanical properties was observed at 300 °C. This was due to the occurrence of multiple-slip, which showed the intersection and entanglement of dislocations and thus improving the strength of Mg matrix.http://www.sciencedirect.com/science/article/pii/S2238785423017416Mg alloysHigh temperatureMechanical propertiesDeformation behaviorSlip |
| spellingShingle | Jianxin Zhou Hong Yang Xiaojun Luo Wenlong Xie Bin Jiang Zhihua Dong Jiangfeng Song Junyao Xu Guangsheng Huang Dingfei Zhang Fusheng Pan Deformation behaviors and the related high-temperature mechanical properties of Mg–11Gd–5Y–2Zn–0.7Zr via regulating extrusion temperatures Journal of Materials Research and Technology Mg alloys High temperature Mechanical properties Deformation behavior Slip |
| title | Deformation behaviors and the related high-temperature mechanical properties of Mg–11Gd–5Y–2Zn–0.7Zr via regulating extrusion temperatures |
| title_full | Deformation behaviors and the related high-temperature mechanical properties of Mg–11Gd–5Y–2Zn–0.7Zr via regulating extrusion temperatures |
| title_fullStr | Deformation behaviors and the related high-temperature mechanical properties of Mg–11Gd–5Y–2Zn–0.7Zr via regulating extrusion temperatures |
| title_full_unstemmed | Deformation behaviors and the related high-temperature mechanical properties of Mg–11Gd–5Y–2Zn–0.7Zr via regulating extrusion temperatures |
| title_short | Deformation behaviors and the related high-temperature mechanical properties of Mg–11Gd–5Y–2Zn–0.7Zr via regulating extrusion temperatures |
| title_sort | deformation behaviors and the related high temperature mechanical properties of mg 11gd 5y 2zn 0 7zr via regulating extrusion temperatures |
| topic | Mg alloys High temperature Mechanical properties Deformation behavior Slip |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423017416 |
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