Microstructure and mechanical properties of pure copper plate processed by novel dynamic offsets and shear force adjustment rolling
Asymmetric rolling is beneficial for grain refinement and properties improvement through mass production of metals. This study introduces a novel asymmetric rolling technology, known as dynamic offsets and shear force adjustment (DS) rolling. DS rolling not only achieves roll offset and differential...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424000760 |
| _version_ | 1827310803308511232 |
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| author | Longfei Xu Kai Yu Li Wang Shizhao Quan Ling Kong Haokun Yang Xiaodan Zhang Yan Peng Yuhui Wang |
| author_facet | Longfei Xu Kai Yu Li Wang Shizhao Quan Ling Kong Haokun Yang Xiaodan Zhang Yan Peng Yuhui Wang |
| author_sort | Longfei Xu |
| collection | DOAJ |
| description | Asymmetric rolling is beneficial for grain refinement and properties improvement through mass production of metals. This study introduces a novel asymmetric rolling technology, known as dynamic offsets and shear force adjustment (DS) rolling. DS rolling not only achieves roll offset and differential speed/diameter, but maintains a constant offset angle in multiple passes. And rolling mechanics model, finite element model, and rolling experiment is established. The results indicate the advantages of DS rolling in reducing the vertical rolling force with increasing offset angles. Moreover, it is observed that the vertical rolling force initially decreases and subsequently increases as the roll-to-diameter ratio increases. DS rolling enhances both average strain and core strain compared to symmetrical rolling, consequently promoting uniformity in strain distribution and permeability into the core region. The shear stress is the primary factor contributing to the increase in equivalent strain during DS rolling. The adjustment of roller diameter ratio and offset angle allows for control over the shear stress level. DS rolling enhances mechanical properties and refines the grain structure. Notably, at an offset angle of 9°, DS rolling results in a substantial increase in microhardness on the upper surface, center, and lower surface of Cu by 3.31 %, 8.40 %, and 8.19 %, respectively, when compared to symmetrical rolling. Furthermore, DS rolling exhibits an enhanced tensile strength and elongation, yielding improvements of 5.12 % and 38.9 % compared to symmetrical rolling, respectively. Additionally, DS rolling leads to a reduction in grain size by 5.77 %, 17.3 %, and 21.7 % on the upper surface, center, and lower surface, respectively. |
| first_indexed | 2024-03-08T12:30:22Z |
| format | Article |
| id | doaj.art-95335881cb3a44e889d7261c96b797f4 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-24T20:05:48Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-95335881cb3a44e889d7261c96b797f42024-03-24T06:57:12ZengElsevierJournal of Materials Research and Technology2238-78542024-03-0129558570Microstructure and mechanical properties of pure copper plate processed by novel dynamic offsets and shear force adjustment rollingLongfei Xu0Kai Yu1Li Wang2Shizhao Quan3Ling Kong4Haokun Yang5Xiaodan Zhang6Yan Peng7Yuhui Wang8National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao, 066004, ChinaNational Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao, 066004, ChinaNational Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao, 066004, ChinaNational Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao, 066004, ChinaNational Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao, 066004, ChinaSmart Manufacturing Division, Hong Kong Productivity Council, 999077, ChinaDepartment of Civil and Mechanical Engineering, Technical University of Denmark, DK-2800, Kgs. Lyngby, DenmarkNational Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao, 066004, ChinaNational Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao, 066004, China; Corresponding author.Asymmetric rolling is beneficial for grain refinement and properties improvement through mass production of metals. This study introduces a novel asymmetric rolling technology, known as dynamic offsets and shear force adjustment (DS) rolling. DS rolling not only achieves roll offset and differential speed/diameter, but maintains a constant offset angle in multiple passes. And rolling mechanics model, finite element model, and rolling experiment is established. The results indicate the advantages of DS rolling in reducing the vertical rolling force with increasing offset angles. Moreover, it is observed that the vertical rolling force initially decreases and subsequently increases as the roll-to-diameter ratio increases. DS rolling enhances both average strain and core strain compared to symmetrical rolling, consequently promoting uniformity in strain distribution and permeability into the core region. The shear stress is the primary factor contributing to the increase in equivalent strain during DS rolling. The adjustment of roller diameter ratio and offset angle allows for control over the shear stress level. DS rolling enhances mechanical properties and refines the grain structure. Notably, at an offset angle of 9°, DS rolling results in a substantial increase in microhardness on the upper surface, center, and lower surface of Cu by 3.31 %, 8.40 %, and 8.19 %, respectively, when compared to symmetrical rolling. Furthermore, DS rolling exhibits an enhanced tensile strength and elongation, yielding improvements of 5.12 % and 38.9 % compared to symmetrical rolling, respectively. Additionally, DS rolling leads to a reduction in grain size by 5.77 %, 17.3 %, and 21.7 % on the upper surface, center, and lower surface, respectively.http://www.sciencedirect.com/science/article/pii/S2238785424000760Dynamic offsetsRolling force modelFinite element modelMicrostructureMechanical propertiesPure copper |
| spellingShingle | Longfei Xu Kai Yu Li Wang Shizhao Quan Ling Kong Haokun Yang Xiaodan Zhang Yan Peng Yuhui Wang Microstructure and mechanical properties of pure copper plate processed by novel dynamic offsets and shear force adjustment rolling Journal of Materials Research and Technology Dynamic offsets Rolling force model Finite element model Microstructure Mechanical properties Pure copper |
| title | Microstructure and mechanical properties of pure copper plate processed by novel dynamic offsets and shear force adjustment rolling |
| title_full | Microstructure and mechanical properties of pure copper plate processed by novel dynamic offsets and shear force adjustment rolling |
| title_fullStr | Microstructure and mechanical properties of pure copper plate processed by novel dynamic offsets and shear force adjustment rolling |
| title_full_unstemmed | Microstructure and mechanical properties of pure copper plate processed by novel dynamic offsets and shear force adjustment rolling |
| title_short | Microstructure and mechanical properties of pure copper plate processed by novel dynamic offsets and shear force adjustment rolling |
| title_sort | microstructure and mechanical properties of pure copper plate processed by novel dynamic offsets and shear force adjustment rolling |
| topic | Dynamic offsets Rolling force model Finite element model Microstructure Mechanical properties Pure copper |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424000760 |
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