A Comparative Study of Friction Self-Piercing Riveting and Self-Piercing Riveting of Aluminum Alloy AA5182-O. (December 2021)

• Record Type: Journal Article
• Authors: Ma, Yunwu; Shan, He; Niu, Sizhe; Li, Yongbing; Lin, Zhongqin; Ma, Ninshu
• Is Part Of: Engineering. Volume 7:Number 12(2021)
• Page Start: 1741
• Page End: 1750
• Publication Date: 2021-12
• Subjects: Self-piercing riveting -- Friction self-piercing riveting -- Mechanical joining -- Quasi-static strength -- Fatigue; Engineering -- Periodicals; Engineering -- China -- Periodicals; 620.005
• DOI: 10.1016/j.eng.2020.06.015
• Languages: English
• ISSNs: 2095-8099

Abstract

Abstract: In this paper, self-piercing riveting (SPR) and friction self-piercing riveting (F-SPR) processes were employed to join aluminum alloy AA5182-O sheets. Parallel studies were carried out to compare the two processes in terms of joint macrogeometry, tooling force, microhardness, quasi-static mechanical performance, and fatigue behavior. The results indicate that the F-SPR process formed both rivet–sheet interlocking and sheet–sheet solid-state bonding, whereas the SPR process only contained rivet–sheet interlocking. For the same rivet flaring, the F-SPR process required 63% less tooling force than the SPR process because of the softening effect of frictional heat and the lower rivet hardness of F-SPR. The decrease in the switch depth of the F-SPR resulted in more hardening of the aluminum alloy surrounding the rivet. The higher hardness of aluminum and formation of solid-state bonding enhanced the F-SPR joint stiffness under lap-shear loading, which contributed to the higher quasi-static lap-shear strength and longer fatigue life compared to those of the SPR joints.