Enhanced mechanical properties of AZ91 magnesium alloy by asynchronously large-strain high-efficiency rolling with bimodal grain structure
The study describes large strain high-speed asynchronous rolling process to process AZ91 magnesium alloy sheets with an overall thickness reduction of 84 % via two-pass rolling at 350 °C. Rolling speed ratios of 1.0, 1.1, 1.2, and 1.3 were used to obtain bimodal grain structure with different organi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423026546 |
| _version_ | 1797301541018796032 |
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| author | Dongxiao Wang Yi Jing Yang Gao Jianping Li Yuan Shi R.D.K. Misra |
| author_facet | Dongxiao Wang Yi Jing Yang Gao Jianping Li Yuan Shi R.D.K. Misra |
| author_sort | Dongxiao Wang |
| collection | DOAJ |
| description | The study describes large strain high-speed asynchronous rolling process to process AZ91 magnesium alloy sheets with an overall thickness reduction of 84 % via two-pass rolling at 350 °C. Rolling speed ratios of 1.0, 1.1, 1.2, and 1.3 were used to obtain bimodal grain structure with different organizational states. Microstructural analysis unraveled that the formation of the bimodal structure was a consequence of combined effect of precipitation-strengthening and the Zener pinning effect. The R3 exhibiting an asynchronous ratio of 1.2 exhibited an optimized bimodal grain structure characterized by smaller recrystallized grains and a more homogeneous distribution. This phenomenon underscored the beneficial impact on enhancing strength and alleviating the anisotropic behavior. |
| first_indexed | 2024-03-07T23:23:07Z |
| format | Article |
| id | doaj.art-a9099e864eef41448e56e5da66a70c25 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-07T23:23:07Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-a9099e864eef41448e56e5da66a70c252024-02-21T05:26:48ZengElsevierJournal of Materials Research and Technology2238-78542023-11-012744304439Enhanced mechanical properties of AZ91 magnesium alloy by asynchronously large-strain high-efficiency rolling with bimodal grain structureDongxiao Wang0Yi Jing1Yang Gao2Jianping Li3Yuan Shi4R.D.K. Misra5The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, ChinaThe State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, ChinaThe State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, ChinaThe State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, 110819, China; Corresponding author.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, ChinaDepartment of Metallurgical, Materials and Biomedical Engineering University of Texas at El Paso, El Paso, TX79968, USAThe study describes large strain high-speed asynchronous rolling process to process AZ91 magnesium alloy sheets with an overall thickness reduction of 84 % via two-pass rolling at 350 °C. Rolling speed ratios of 1.0, 1.1, 1.2, and 1.3 were used to obtain bimodal grain structure with different organizational states. Microstructural analysis unraveled that the formation of the bimodal structure was a consequence of combined effect of precipitation-strengthening and the Zener pinning effect. The R3 exhibiting an asynchronous ratio of 1.2 exhibited an optimized bimodal grain structure characterized by smaller recrystallized grains and a more homogeneous distribution. This phenomenon underscored the beneficial impact on enhancing strength and alleviating the anisotropic behavior.http://www.sciencedirect.com/science/article/pii/S2238785423026546AZ91Bimodal grainAsynchronous rollingLarge reductionAnisotropy |
| spellingShingle | Dongxiao Wang Yi Jing Yang Gao Jianping Li Yuan Shi R.D.K. Misra Enhanced mechanical properties of AZ91 magnesium alloy by asynchronously large-strain high-efficiency rolling with bimodal grain structure Journal of Materials Research and Technology AZ91 Bimodal grain Asynchronous rolling Large reduction Anisotropy |
| title | Enhanced mechanical properties of AZ91 magnesium alloy by asynchronously large-strain high-efficiency rolling with bimodal grain structure |
| title_full | Enhanced mechanical properties of AZ91 magnesium alloy by asynchronously large-strain high-efficiency rolling with bimodal grain structure |
| title_fullStr | Enhanced mechanical properties of AZ91 magnesium alloy by asynchronously large-strain high-efficiency rolling with bimodal grain structure |
| title_full_unstemmed | Enhanced mechanical properties of AZ91 magnesium alloy by asynchronously large-strain high-efficiency rolling with bimodal grain structure |
| title_short | Enhanced mechanical properties of AZ91 magnesium alloy by asynchronously large-strain high-efficiency rolling with bimodal grain structure |
| title_sort | enhanced mechanical properties of az91 magnesium alloy by asynchronously large strain high efficiency rolling with bimodal grain structure |
| topic | AZ91 Bimodal grain Asynchronous rolling Large reduction Anisotropy |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423026546 |
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