Preparing strong and ductile AZ80 Mg alloy via warm rotary swaging
Rotary swaging at different temperatures has been conducted to process the AZ80 Mg alloy rods, and the results are compared. Rotary swaging to an equivalent strain of 0.25 at room temperature, induced high densities of deformation twins and macrocracks, causing catastrophic failure of the swaged rod...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424028813 |
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| author | Zhenghao Li Mengning Xu Kaixuan Zhou Yang Cao Yonghao Zhao |
| author_facet | Zhenghao Li Mengning Xu Kaixuan Zhou Yang Cao Yonghao Zhao |
| author_sort | Zhenghao Li |
| collection | DOAJ |
| description | Rotary swaging at different temperatures has been conducted to process the AZ80 Mg alloy rods, and the results are compared. Rotary swaging to an equivalent strain of 0.25 at room temperature, induced high densities of deformation twins and macrocracks, causing catastrophic failure of the swaged rods. In contrast, repetitive conduct of 260°C-swaging and water cooling promotes <c + a> dislocation slip and localized grain refinement via twinning and dynamic recrystallization, and thus to lower the number of large twin bands in coarse grains. The sample processed by 260°C-swaging and water cooling has a nano-structural hierarchy consisting of bimodal grain size distributions and high densities of nano-precipitates located at grain boundaries of the ultrafine grains and at coarse-grain interiors, and shows a gradient hardness distribution from the periphery to center of the rod; Correspondingly, the 260 °C swaged sample shows outstanding combinations of strength and ductility at both the peripheral and central regions. |
| format | Article |
| id | doaj-art-9e0eac7094514d968a7dfa9170a23907 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-9e0eac7094514d968a7dfa9170a239072025-01-19T06:25:19ZengElsevierJournal of Materials Research and Technology2238-78542025-01-0134807818Preparing strong and ductile AZ80 Mg alloy via warm rotary swagingZhenghao Li0Mengning Xu1Kaixuan Zhou2Yang Cao3Yonghao Zhao4Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, ChinaNano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, ChinaNano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, ChinaNano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; School of Materials Science and Engineering, Hohai University, Changzhou, 213200, China; Corresponding author. Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; School of Materials Science and Engineering, Hohai University, Changzhou, 213200, China; Corresponding author. Nano and Heterogeneous Materials Center, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.Rotary swaging at different temperatures has been conducted to process the AZ80 Mg alloy rods, and the results are compared. Rotary swaging to an equivalent strain of 0.25 at room temperature, induced high densities of deformation twins and macrocracks, causing catastrophic failure of the swaged rods. In contrast, repetitive conduct of 260°C-swaging and water cooling promotes <c + a> dislocation slip and localized grain refinement via twinning and dynamic recrystallization, and thus to lower the number of large twin bands in coarse grains. The sample processed by 260°C-swaging and water cooling has a nano-structural hierarchy consisting of bimodal grain size distributions and high densities of nano-precipitates located at grain boundaries of the ultrafine grains and at coarse-grain interiors, and shows a gradient hardness distribution from the periphery to center of the rod; Correspondingly, the 260 °C swaged sample shows outstanding combinations of strength and ductility at both the peripheral and central regions.http://www.sciencedirect.com/science/article/pii/S2238785424028813Magnesium alloyPlastic deformationPrecipitationHeterostructureNano-structure |
| spellingShingle | Zhenghao Li Mengning Xu Kaixuan Zhou Yang Cao Yonghao Zhao Preparing strong and ductile AZ80 Mg alloy via warm rotary swaging Journal of Materials Research and Technology Magnesium alloy Plastic deformation Precipitation Heterostructure Nano-structure |
| title | Preparing strong and ductile AZ80 Mg alloy via warm rotary swaging |
| title_full | Preparing strong and ductile AZ80 Mg alloy via warm rotary swaging |
| title_fullStr | Preparing strong and ductile AZ80 Mg alloy via warm rotary swaging |
| title_full_unstemmed | Preparing strong and ductile AZ80 Mg alloy via warm rotary swaging |
| title_short | Preparing strong and ductile AZ80 Mg alloy via warm rotary swaging |
| title_sort | preparing strong and ductile az80 mg alloy via warm rotary swaging |
| topic | Magnesium alloy Plastic deformation Precipitation Heterostructure Nano-structure |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424028813 |
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