An effective rolling process of magnesium alloys for suppressing edge cracks: Width-limited rolling
To suppress the edge crack of the magnesium alloy sheet during the ordinary rolling process, a new rolling process named width-limited rolling was proposed in this paper. Width-limited rolling is a rolling method in which the width of the alloy sheet is limited by modifying the shape of the rollers,...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2022-08-01
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| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S221395672100030X |
| _version_ | 1811183468244107264 |
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| author | Jing Tian Huihu Lu Wanggang Zhang Huihui Nie Quanxin Shi Jiafei Deng Wei Liang Lifei Wang |
| author_facet | Jing Tian Huihu Lu Wanggang Zhang Huihui Nie Quanxin Shi Jiafei Deng Wei Liang Lifei Wang |
| author_sort | Jing Tian |
| collection | DOAJ |
| description | To suppress the edge crack of the magnesium alloy sheet during the ordinary rolling process, a new rolling process named width-limited rolling was proposed in this paper. Width-limited rolling is a rolling method in which the width of the alloy sheet is limited by modifying the shape of the rollers, allowing a compressive stress field to form at the edge portion of the alloy sheet during rolling, resulting in the reduction of edge cracks. At present work, magnesium alloy sheets were separately subjected to ordinary rolling and width-limited rolling. The microstructure evolution and mechanical properties of the rolled sheets were investigated by EBSD, TEM, and XRD. The results exhibited that under the same rolling conditions, the sheet after ordinary rolling exhibited obvious edge cracks while no crack was found at the edge of the sheet after width-limited rolling. The edge crack suppressing effect was attributed to the reduction of the tensile stress along rolling direction during WLR, promoting the synchronous extension of the edge and center regions to suppress edge crack tendency. Microstructure observation showed that the compressive twins formed in the sheet after ordinary rolling usually exhibited as thin plates and cannot continue to fully develop due to the premature generation of the edge cracks. However, the compressive twins developed maturely in some of which double twins formed and various slip systems with different dislocation Burgers vectors occurred in the rolled sheet after WLR. More twin intersections and shear bands, providing more potential recrystallization nucleation sites, which are beneficial to weaken basal texture. With the cooperation of twinning and dislocation slip, the texture of the sheet after the width-limited rolling is weakened and the mechanical properties are improved. |
| first_indexed | 2024-04-11T09:47:42Z |
| format | Article |
| id | doaj.art-a4d2a6f83e0c4374aa13d7bb4186f1c0 |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-04-11T09:47:42Z |
| publishDate | 2022-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-a4d2a6f83e0c4374aa13d7bb4186f1c02022-12-22T04:30:55ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672022-08-0110821932207An effective rolling process of magnesium alloys for suppressing edge cracks: Width-limited rollingJing Tian0Huihu Lu1Wanggang Zhang2Huihui Nie3Quanxin Shi4Jiafei Deng5Wei Liang6Lifei Wang7College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaShanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, China; Instrumental Analysis Center of Taiyuan University of Technology, China; Corresponding authors at: College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China.College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology, Taiyuan 030024, China; Corresponding authors at: College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China.To suppress the edge crack of the magnesium alloy sheet during the ordinary rolling process, a new rolling process named width-limited rolling was proposed in this paper. Width-limited rolling is a rolling method in which the width of the alloy sheet is limited by modifying the shape of the rollers, allowing a compressive stress field to form at the edge portion of the alloy sheet during rolling, resulting in the reduction of edge cracks. At present work, magnesium alloy sheets were separately subjected to ordinary rolling and width-limited rolling. The microstructure evolution and mechanical properties of the rolled sheets were investigated by EBSD, TEM, and XRD. The results exhibited that under the same rolling conditions, the sheet after ordinary rolling exhibited obvious edge cracks while no crack was found at the edge of the sheet after width-limited rolling. The edge crack suppressing effect was attributed to the reduction of the tensile stress along rolling direction during WLR, promoting the synchronous extension of the edge and center regions to suppress edge crack tendency. Microstructure observation showed that the compressive twins formed in the sheet after ordinary rolling usually exhibited as thin plates and cannot continue to fully develop due to the premature generation of the edge cracks. However, the compressive twins developed maturely in some of which double twins formed and various slip systems with different dislocation Burgers vectors occurred in the rolled sheet after WLR. More twin intersections and shear bands, providing more potential recrystallization nucleation sites, which are beneficial to weaken basal texture. With the cooperation of twinning and dislocation slip, the texture of the sheet after the width-limited rolling is weakened and the mechanical properties are improved.http://www.sciencedirect.com/science/article/pii/S221395672100030XWidth-limited rollingTextureTwinning deformationDislocationDRX |
| spellingShingle | Jing Tian Huihu Lu Wanggang Zhang Huihui Nie Quanxin Shi Jiafei Deng Wei Liang Lifei Wang An effective rolling process of magnesium alloys for suppressing edge cracks: Width-limited rolling Journal of Magnesium and Alloys Width-limited rolling Texture Twinning deformation Dislocation DRX |
| title | An effective rolling process of magnesium alloys for suppressing edge cracks: Width-limited rolling |
| title_full | An effective rolling process of magnesium alloys for suppressing edge cracks: Width-limited rolling |
| title_fullStr | An effective rolling process of magnesium alloys for suppressing edge cracks: Width-limited rolling |
| title_full_unstemmed | An effective rolling process of magnesium alloys for suppressing edge cracks: Width-limited rolling |
| title_short | An effective rolling process of magnesium alloys for suppressing edge cracks: Width-limited rolling |
| title_sort | effective rolling process of magnesium alloys for suppressing edge cracks width limited rolling |
| topic | Width-limited rolling Texture Twinning deformation Dislocation DRX |
| url | http://www.sciencedirect.com/science/article/pii/S221395672100030X |
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