Study on the Formation Mechanism of Fish-Scale Defects during Flow Forming of Copper Alloy Tubes with Large Thickness-to-Diameter Ratio
Flow forming is one of the most effective methods for producing tube-shaped parts. However, fish-scale defects occur easily during the flow forming of copper alloy tubes with large thickness-to-diameter ratio, which significantly affects the surface quality and performance of the spun tubes. The rea...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2025-01-01
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| Series: | MATEC Web of Conferences |
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| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2025/02/matecconf_iddrg2025_01048.pdf |
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| author | Xia Qinxiang Zhao Jie Xiao Gangfeng Tang Delin Cui Huachun |
| author_facet | Xia Qinxiang Zhao Jie Xiao Gangfeng Tang Delin Cui Huachun |
| author_sort | Xia Qinxiang |
| collection | DOAJ |
| description | Flow forming is one of the most effective methods for producing tube-shaped parts. However, fish-scale defects occur easily during the flow forming of copper alloy tubes with large thickness-to-diameter ratio, which significantly affects the surface quality and performance of the spun tubes. The reason for the formation of fish-scale defects and the microstructural characteristics in the defective regions were investigated experimentally, the deformation behavior and strain distribution of materials were revealed through finite element simulation. The results show that fish-scale defects are a folding phenomenon caused by local instability during forming; deformation concentrates on the outer surface due to the large thickness-to-diameter ratio of the tubular blank and the low hardening index of the copper alloy; the plastic deformation ability of the material on the outer surface decreases with the increasing of deformation degree, which leads to local flow instability and results in the formation of fish-scale defects. |
| format | Article |
| id | doaj-art-cba06c3db0ee449f87af469a2cc4c23d |
| institution | Kabale University |
| issn | 2261-236X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj-art-cba06c3db0ee449f87af469a2cc4c23d2025-08-20T03:53:51ZengEDP SciencesMATEC Web of Conferences2261-236X2025-01-014080104810.1051/matecconf/202540801048matecconf_iddrg2025_01048Study on the Formation Mechanism of Fish-Scale Defects during Flow Forming of Copper Alloy Tubes with Large Thickness-to-Diameter RatioXia Qinxiang0Zhao Jie1Xiao Gangfeng2Tang Delin3Cui Huachun4School of Mechanical and Automotive Engineering, South China University of TechnologySchool of Mechanical and Automotive Engineering, South China University of TechnologySchool of Mechanical and Automotive Engineering, South China University of TechnologyCo., Ltd of Yantai Wanlong Vacuum MetallurgyCo., Ltd of Yantai Wanlong Vacuum MetallurgyFlow forming is one of the most effective methods for producing tube-shaped parts. However, fish-scale defects occur easily during the flow forming of copper alloy tubes with large thickness-to-diameter ratio, which significantly affects the surface quality and performance of the spun tubes. The reason for the formation of fish-scale defects and the microstructural characteristics in the defective regions were investigated experimentally, the deformation behavior and strain distribution of materials were revealed through finite element simulation. The results show that fish-scale defects are a folding phenomenon caused by local instability during forming; deformation concentrates on the outer surface due to the large thickness-to-diameter ratio of the tubular blank and the low hardening index of the copper alloy; the plastic deformation ability of the material on the outer surface decreases with the increasing of deformation degree, which leads to local flow instability and results in the formation of fish-scale defects.https://www.matec-conferences.org/articles/matecconf/pdf/2025/02/matecconf_iddrg2025_01048.pdfflow forminglarge thickness-to-diameter ratiocopper alloyfish-scale defect |
| spellingShingle | Xia Qinxiang Zhao Jie Xiao Gangfeng Tang Delin Cui Huachun Study on the Formation Mechanism of Fish-Scale Defects during Flow Forming of Copper Alloy Tubes with Large Thickness-to-Diameter Ratio MATEC Web of Conferences flow forming large thickness-to-diameter ratio copper alloy fish-scale defect |
| title | Study on the Formation Mechanism of Fish-Scale Defects during Flow Forming of Copper Alloy Tubes with Large Thickness-to-Diameter Ratio |
| title_full | Study on the Formation Mechanism of Fish-Scale Defects during Flow Forming of Copper Alloy Tubes with Large Thickness-to-Diameter Ratio |
| title_fullStr | Study on the Formation Mechanism of Fish-Scale Defects during Flow Forming of Copper Alloy Tubes with Large Thickness-to-Diameter Ratio |
| title_full_unstemmed | Study on the Formation Mechanism of Fish-Scale Defects during Flow Forming of Copper Alloy Tubes with Large Thickness-to-Diameter Ratio |
| title_short | Study on the Formation Mechanism of Fish-Scale Defects during Flow Forming of Copper Alloy Tubes with Large Thickness-to-Diameter Ratio |
| title_sort | study on the formation mechanism of fish scale defects during flow forming of copper alloy tubes with large thickness to diameter ratio |
| topic | flow forming large thickness-to-diameter ratio copper alloy fish-scale defect |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2025/02/matecconf_iddrg2025_01048.pdf |
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