Effects of rotation speed on microstructure and mechanical properties of non-prehole riveting process for high-strength aluminium alloys
Traditional solid riveting and hi-lock bolt (HLB) are widely adopted in the aircraft assembly, but require pre-drilled holes before joining. In this research, an improved friction self-piercing riveting process was developed to connect 2.0 mm + 4.0 mm AA7075-T6 aluminium sheets without pilot holes....
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127524009146 |
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| author | Yunpeng Liu Yunwu Ma Ming Lou Entao Zhou Bowen Zhang Zhilei Fan Ende Ge Huan Zhao Yongbing Li |
| author_facet | Yunpeng Liu Yunwu Ma Ming Lou Entao Zhou Bowen Zhang Zhilei Fan Ende Ge Huan Zhao Yongbing Li |
| author_sort | Yunpeng Liu |
| collection | DOAJ |
| description | Traditional solid riveting and hi-lock bolt (HLB) are widely adopted in the aircraft assembly, but require pre-drilled holes before joining. In this research, an improved friction self-piercing riveting process was developed to connect 2.0 mm + 4.0 mm AA7075-T6 aluminium sheets without pilot holes. To clarify the impact of rivet rotation speed, the axial force, torque, geometric quality, microhardness and mechanical properties were experimentally investigated. With the rotation speed increasing from 1600 rpm to 5600 rpm, the maximum axial force minorly fluctuated around 10.5 kN but the maximum torque declined from 16.0 Nm to 6.0 Nm. The frictional heat input increased from 4000 J to 5100 J, resulting in a wider thermal softening zone and lower sheet microhardness. Crack, size reduction and void defects on aluminium threads were eliminated with the increment of rotation speed. One inner solid-state bonding zone was formed at rotation speeds smaller than 4600 rpm, but two inner solid-state bonding zones were generated at the rotation speed of 5600 rpm. The joint lap-shear strength was negatively affected, whilst the average peak load was always greater than 9.0 kN. The joint cross-tension strength was also affected but the average peak load was always greater than 4.0 kN. |
| format | Article |
| id | doaj-art-885f33261a624ba18d22fdb16f5e85ff |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-885f33261a624ba18d22fdb16f5e85ff2025-01-09T06:12:20ZengElsevierMaterials & Design0264-12752025-01-01249113539Effects of rotation speed on microstructure and mechanical properties of non-prehole riveting process for high-strength aluminium alloysYunpeng Liu0Yunwu Ma1Ming Lou2Entao Zhou3Bowen Zhang4Zhilei Fan5Ende Ge6Huan Zhao7Yongbing Li8Key Laboratory of Modern Mechanisms and Equipment Design of The State Ministry of Education, Tianjin University, Tianjin 300072, PR ChinaShanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; Corresponding authors.Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR ChinaShanghai Aircraft Manufacturing Factory, Commercial Aircraft Corporation of China, Shanghai 201324, PR ChinaShanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR ChinaShanghai Aircraft Manufacturing Factory, Commercial Aircraft Corporation of China, Shanghai 201324, PR ChinaShanghai Aircraft Manufacturing Factory, Commercial Aircraft Corporation of China, Shanghai 201324, PR ChinaCollege of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin 300222, PR ChinaShanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; Corresponding authors.Traditional solid riveting and hi-lock bolt (HLB) are widely adopted in the aircraft assembly, but require pre-drilled holes before joining. In this research, an improved friction self-piercing riveting process was developed to connect 2.0 mm + 4.0 mm AA7075-T6 aluminium sheets without pilot holes. To clarify the impact of rivet rotation speed, the axial force, torque, geometric quality, microhardness and mechanical properties were experimentally investigated. With the rotation speed increasing from 1600 rpm to 5600 rpm, the maximum axial force minorly fluctuated around 10.5 kN but the maximum torque declined from 16.0 Nm to 6.0 Nm. The frictional heat input increased from 4000 J to 5100 J, resulting in a wider thermal softening zone and lower sheet microhardness. Crack, size reduction and void defects on aluminium threads were eliminated with the increment of rotation speed. One inner solid-state bonding zone was formed at rotation speeds smaller than 4600 rpm, but two inner solid-state bonding zones were generated at the rotation speed of 5600 rpm. The joint lap-shear strength was negatively affected, whilst the average peak load was always greater than 9.0 kN. The joint cross-tension strength was also affected but the average peak load was always greater than 4.0 kN.http://www.sciencedirect.com/science/article/pii/S0264127524009146Improved friction self-piercing rivetingAluminium alloyMicrostructureQuality characteristicsMechanical property |
| spellingShingle | Yunpeng Liu Yunwu Ma Ming Lou Entao Zhou Bowen Zhang Zhilei Fan Ende Ge Huan Zhao Yongbing Li Effects of rotation speed on microstructure and mechanical properties of non-prehole riveting process for high-strength aluminium alloys Materials & Design Improved friction self-piercing riveting Aluminium alloy Microstructure Quality characteristics Mechanical property |
| title | Effects of rotation speed on microstructure and mechanical properties of non-prehole riveting process for high-strength aluminium alloys |
| title_full | Effects of rotation speed on microstructure and mechanical properties of non-prehole riveting process for high-strength aluminium alloys |
| title_fullStr | Effects of rotation speed on microstructure and mechanical properties of non-prehole riveting process for high-strength aluminium alloys |
| title_full_unstemmed | Effects of rotation speed on microstructure and mechanical properties of non-prehole riveting process for high-strength aluminium alloys |
| title_short | Effects of rotation speed on microstructure and mechanical properties of non-prehole riveting process for high-strength aluminium alloys |
| title_sort | effects of rotation speed on microstructure and mechanical properties of non prehole riveting process for high strength aluminium alloys |
| topic | Improved friction self-piercing riveting Aluminium alloy Microstructure Quality characteristics Mechanical property |
| url | http://www.sciencedirect.com/science/article/pii/S0264127524009146 |
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