Transactions of Materials and Heat Treatment

Title：Study on forming quality and mechanical properties of self-piercing riveting for steel-steel-aluminum three-layer sheet

Authors： Yu Wanyuan1 Wang Chao2 Long Guangpeng3 Wang Guochun3

Unit： 1. College of Automotive Engineering Liuzhou Vocational & Technical College 2. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body 3. AISN Innovative Design and Manufacturing Co. Ltd.

KeyWords： pre-holed self-piercing riveting high-strength steel die-casting aluminum alloy mechanical property failure mode

ClassificationCode：TG938

year,vol(issue):pagenumber：2024,49(4):153-160

Abstract：

The feasibility of pre-holed self-piercing riveting (PH-SPR) for three-layer sheets of high-strength steel (HC420/780DP), high-strength steel (HC340/590DP) and die-casting aluminum alloy (JDA1b and AlSi10MnMg-T7) was investigated. The effects of steel sheet thickness and lower sheet material on the forming quality of joint were evaluated. The mechanical properties of joints were analyzed through the shear and cross-tension tests, and the failure modes of joints were observed. The results indicate that the self-piercing riveting of three-layer sheets can be achieved by using the method of pre-hole on the upper sheet. The undercut amount of joints decreases with the increasing of thicknesses for the upper and middle sheets, and the thickness of the middle sheet has a more pronounced effect on the undercut amount of joints. The joints with AlSi10MnMg-T7 die-casting aluminum alloy as lower sheet material have larger undercut amount than that with JDA1b die-casting aluminum alloy as lower sheet. Furthermore, the peak load and energy absorption of joints decrease with the decreasing of the undercut amount of joints. The failure modes of both shear joint and cross-tension joint are rivets pulled out from the lower sheet. The fracture failure of aluminum materials can be divided into brittle fracture and ductile fracture.

Funds：

广东省重点领域研发计划项目(2022B0909070001)；2024年度广西高校中青年教师科研基础能力提升项目（2024KY1097）

作者简介：于万元(1987-)，女，硕士，讲师 E-mail：ywy196364@126.com 通信作者：王国春(1979-)，男，博士，高级工程师 E-mail：wang_guochun@126.com

Reference：

[1]史国宏, 陈勇, 杨雨泽, 等. 白车身多学科轻量化优化设计应用[J]. 机械工程学报, 2012, 48(8): 110-114.

Shi G H, Chen Y, Yang Y Z, et al. BIW architecture multidisciplinary light weight optimization design[J]. Journal of Mechanical Engineering, 2012, 48(8): 110-114.

[2]金鑫, 李永兵, 楼铭, 等. 基于正交试验的铝合金-高强钢异种金属自冲铆接工艺优化[J]. 汽车工程学报, 2011, 1 (4): 185-191.

Jin X, Li Y B, Lou M, et al. Process optimization of selfpiercing riveting aluminum to high strength steel using doe method[J]. Chinese Journal of Automotive Engineering, 2011, 1(4): 185-191.

[3]扶文生, 张先炼, 张青. 5083铝合金自冲铆接成形机理与失效分析[J]. 塑性工程学报, 2023, 30(3): 91-98.

Fu W S, Zhang X L, Zhang Q. Forming mechanism and failure analysis of selfpiercing riveted of 5083 aluminum alloys[J]. Journal of Plasticity Engineering, 2023, 30(3): 91-98.

[4]Zhao H, Han L, Liu Y P, et al. Modelling and interaction analysis of the selfpierce riveting process using regression analysis and FEA[J]. The International Journal of Advanced Manufacturing Technology, 2021, 113(1-2): 159-176.

[5]Zhou Z J, Huang Z C, Jiang Y Q, et al. Joining properties of SPFC440/AA5052 multimaterial selfpiercing riveting joints[J]. Materials, 2022, 15(9): 2962.

[6]Achira S, Abe Y, Mori K I. Selfpierce riveting of three thin sheets of aluminum alloy A5052 and 980 MPa steel[J]. Materials, 2022, 15(3): 1010.

[7]Karathanasopoulos N, Pandya K S, Mohr D. An experimental and numerical investigation of the role of rivet and die design on the selfpiercing riveting joint characteristics of aluminum and steel sheets[J]. Journal of Manufacturing Processes, 2021, 69: 290-302.

[8]廖品翔, 林建平, 闵峻英, 等.下板厚度对钢/铝自冲铆接接头单搭剪切强度的影响[J]. 锻压技术, 2022, 47(7): 145-153.

Liao P X, Lin J P, Min J Y, et al. Influence of lower plate thickness on single lap shear strength of joint in steel and aluminum selfpiercing riveting[J]. Forging & Stamping Technology, 2022, 47(7): 145-153.

[9]丁文有, 何晓聪, 刘佳沐, 等. 碳纤维增强聚合物-AA5052铝合金三层板自冲铆接性能[J]. 科学技术与工程, 2018, 18(25): 143-147.

Ding W Y, He X C, Liu J M, et al. Performance of selfpierce riveting based on carbon fiber reinforced polymerAA5052 aluminum alloy threelayer sheets[J]. Science Technology and Engineering, 2018, 18(25): 143-147.

[10]何博赟. 多层钢铝混合材料自冲铆接工艺及其接头力学性能研究[D]. 长沙：湖南大学, 2020.

He B Y. Research on Selfpiercing Riveting Process and Joint Mechanical Property of Multilayer Steel and Aluminum Mixed Materials[D]. Changsha: Hunan University, 2020.

[11]Mori K, Abe Y, Kato T. Selfpierce riveting of multiple steel and aluminium alloy sheets[J]. Journal of Materials Processing Technology, 2014, 214(10): 2002-2008.

[12]王世鹏, 何晓聪, 刘佳沐, 等. 三明治结构自冲铆接头力学性能及失效模式分析[J]. 有色金属工程, 2020, 10(8): 27-32.

Wang S P, He X C, Liu J M, et al. Analysis of mechanical properties and failure modes of sandwich structure selfpiercing riveting joint[J]. Nonferrous Metals Engineering, 2020, 10(8): 27-32.

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