The extrusion ratios modification of Mg-2Gd-xMn alloys to exploration of the strengthening mechanisms
Enhancing the strength of magnesium alloys, a lightweight material, is crucial in promoting its widespread adoption and utilization. In this comprehensive study, the effects of various extrusion ratios and manganese contents on the properties of Mg-2Gd-xMn alloys have been rigorously examined using...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424007464 |
| _version_ | 1797221751403315200 |
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| author | Tianshuo Zhao Yuanxiao Dai Tianxu Zheng Yaobo Hu Bin Jiang Fusheng Pan |
| author_facet | Tianshuo Zhao Yuanxiao Dai Tianxu Zheng Yaobo Hu Bin Jiang Fusheng Pan |
| author_sort | Tianshuo Zhao |
| collection | DOAJ |
| description | Enhancing the strength of magnesium alloys, a lightweight material, is crucial in promoting its widespread adoption and utilization. In this comprehensive study, the effects of various extrusion ratios and manganese contents on the properties of Mg-2Gd-xMn alloys have been rigorously examined using state-of-the-art techniques such as Electron Backscatter Diffraction (EBSD) and Transmission Electron Microscopy (TEM). Observations reveal that the microstructure of as-extruded Mg-2Gd-xMn alloys typically exhibit a bimodal structure, characterized by a mix of equiaxed recrystallized grains and elongated unrecrystallized grains. The reduction of the extrusion ratio reduces the deformation energy that promotes the nucleation and growth of recrystallization, which effectively reduces the alloy recrystallization grain size and increases the volume fraction of the unrecrystallized microstructure. The uncrystallized microstructure have a significant fiber texture that poses challenges in activating basal slip and is accompanied by a more pronounced work-hardening trend. Additionally, the investigation reveals the vital role of α-Mn particles in obstructing dislocation movement and refining the grains, thereby contributing to enhanced alloys strengthening. Therefore, by harnessing the synergistic strengthening effects of the aforementioned mechanisms, the Mg-2Gd-2Mn alloy demonstrates significantly improved yield strength and tensile strength, reaching an impressive 240 MPa and 281 MPa, respectively. |
| first_indexed | 2024-04-24T13:10:25Z |
| format | Article |
| id | doaj.art-344650cb5886434ab82a82ebd623afbb |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-24T13:10:25Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-344650cb5886434ab82a82ebd623afbb2024-04-05T04:40:51ZengElsevierJournal of Materials Research and Technology2238-78542024-05-013021472157The extrusion ratios modification of Mg-2Gd-xMn alloys to exploration of the strengthening mechanismsTianshuo Zhao0Yuanxiao Dai1Tianxu Zheng2Yaobo Hu3Bin Jiang4Fusheng Pan5School of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaSchool of Materials Science and Engineering, Chongqing University, Chongqing, 400044, ChinaSino-Platinum Metals Co., Ltd, Kunming, 650106, ChinaSchool of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing, 400044, China; National Key Laboratory of Advanced Casting Technologies, Chongqing University, Chongqing, 400044, China; Corresponding author. School of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China.School of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing, 400044, China; National Key Laboratory of Advanced Casting Technologies, Chongqing University, Chongqing, 400044, ChinaSchool of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China; National Engineering Research Center for Magnesium Alloys, Chongqing, 400044, China; Corresponding author. National Engineering Research Center for Magnesium Alloys, Chongqing, 400044, ChinaEnhancing the strength of magnesium alloys, a lightweight material, is crucial in promoting its widespread adoption and utilization. In this comprehensive study, the effects of various extrusion ratios and manganese contents on the properties of Mg-2Gd-xMn alloys have been rigorously examined using state-of-the-art techniques such as Electron Backscatter Diffraction (EBSD) and Transmission Electron Microscopy (TEM). Observations reveal that the microstructure of as-extruded Mg-2Gd-xMn alloys typically exhibit a bimodal structure, characterized by a mix of equiaxed recrystallized grains and elongated unrecrystallized grains. The reduction of the extrusion ratio reduces the deformation energy that promotes the nucleation and growth of recrystallization, which effectively reduces the alloy recrystallization grain size and increases the volume fraction of the unrecrystallized microstructure. The uncrystallized microstructure have a significant fiber texture that poses challenges in activating basal slip and is accompanied by a more pronounced work-hardening trend. Additionally, the investigation reveals the vital role of α-Mn particles in obstructing dislocation movement and refining the grains, thereby contributing to enhanced alloys strengthening. Therefore, by harnessing the synergistic strengthening effects of the aforementioned mechanisms, the Mg-2Gd-2Mn alloy demonstrates significantly improved yield strength and tensile strength, reaching an impressive 240 MPa and 281 MPa, respectively.http://www.sciencedirect.com/science/article/pii/S2238785424007464Magnesium alloysMechanical propertiesExtrusionStrengthening mechanism |
| spellingShingle | Tianshuo Zhao Yuanxiao Dai Tianxu Zheng Yaobo Hu Bin Jiang Fusheng Pan The extrusion ratios modification of Mg-2Gd-xMn alloys to exploration of the strengthening mechanisms Journal of Materials Research and Technology Magnesium alloys Mechanical properties Extrusion Strengthening mechanism |
| title | The extrusion ratios modification of Mg-2Gd-xMn alloys to exploration of the strengthening mechanisms |
| title_full | The extrusion ratios modification of Mg-2Gd-xMn alloys to exploration of the strengthening mechanisms |
| title_fullStr | The extrusion ratios modification of Mg-2Gd-xMn alloys to exploration of the strengthening mechanisms |
| title_full_unstemmed | The extrusion ratios modification of Mg-2Gd-xMn alloys to exploration of the strengthening mechanisms |
| title_short | The extrusion ratios modification of Mg-2Gd-xMn alloys to exploration of the strengthening mechanisms |
| title_sort | extrusion ratios modification of mg 2gd xmn alloys to exploration of the strengthening mechanisms |
| topic | Magnesium alloys Mechanical properties Extrusion Strengthening mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424007464 |
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