Behavior and Quality Evaluation of Electroplastic Self-Piercing Riveting of Aluminum Alloy and Advanced High Strength Steel

Lou, Ming; Li, Yongbing; Li, Yating; Chen, Guanlong

doi:10.1115/1.4023256

Cited by 44 publications

(18 citation statements)

References 31 publications

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“…Although there are research and development on other types of SPR, such as solid SPR [31][32][33] or clinch riveting [34][35][36], single-sided SPR (SSPR) [25], gun powder-driving SPR [37], friction SPR [38][39][40][41], inner flange pipe rivet [42] and rivet-welding/ electroplastic SPR [43,44], they are not the main stream and therefore not reviewed in detail in this paper.…”

Section: Introductionmentioning

confidence: 99%

Self-piercing riveting-a review

Chrysanthou

Imran

et al. 2017

Int J Adv Manuf Technol

239

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Self-piercing riveting (SPR) is a cold mechanical joining process used to join two or more sheets of materials by driving a rivet piercing through the top sheet or the top and middle sheets and subsequently lock into the bottom sheet under the guidance of a suitable die. SPR is currently the main joining method for aluminium and mixed-material lightweight automotive structures. SPR was originated half century ago, but it only had significant progress in the last 25 years due to the requirement of joining lightweight materials, such as aluminium alloy structures, aluminium-steel structures and other mixed-material structures, from the automotive industry. Compared with other conventional joining methods, SPR has many advantages including no pre-drilled holes required, no fume, no spark and low noise, no surface treatment required, ability to join multi-layer materials and mixed materials and ability to produce joints with high static and fatigue strengths. In this paper, research investigations that have been conducted on self-piercing riveting will be extensively reviewed. The current state and development of SPR process is reviewed and the influence of the key process parameters on joint quality is discussed. The mechanical properties of SPR joints, the corrosion behaviour of SPR joints, the distortion of SPR joints and the simulation of SPR process and joint performance are reviewed. Developing reliable simulation methods for SPR process and joint performance to reduce the need of physical testing has been identified as one of the main challenges.

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Section: Introductionmentioning

confidence: 99%

Self-piercing riveting-a review

Chrysanthou

Imran

et al. 2017

Int J Adv Manuf Technol

239

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“…Troitskii (1969) reported the electro-plastic softening effect. Based on this phenomenon, Lou et al (2013) implemented a high density electrical current during SPR of Al 6061 to DP780 advanced high strength steel. Punching force can be reduced during the process.…”

Section: Introductionmentioning

confidence: 99%

Effects of process parameters on friction self-piercing riveting of dissimilar materials

Liu

Lim

et al. 2016

Journal of Materials Processing Technology

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In the present work, a recently developed solid state joining technique, Friction self-piercing riveting (F-SPR), has been applied for joining high strength aluminum alloy AA7075-T6 to magnesium alloy AZ31B. The process was performed on a specially designed machine where the spindle can achieve the motion of sudden stop. Effects of rivet rotating rate and punch speed on axial plunge force, torque, joint microstructure and quality have been analyzed systematically. During F-SPR, higher rotating rate and slower punch speed can reduce axial force and torque, which correspondingly results in a slightly smaller interlock between rivet leg and joined materials. Improved local flowability of both aluminum and magnesium alloys under a higher rotating speed results in a thicker aluminum layer surrounding the rivet leg, where formation of Al-Mg intermetallics was observed. Equivalent joint strength obtained in this study are higher than the yield strength of the AZ31 Mg alloy. One of the tensile failure modes is the rivet fracture, which is due to local softening of rivet leg from frictional heat. Other two failure modes include rivet pullout and shear through of bottom sheet.

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“…SPR as a preferred cold-forming fastening method is facing problems like weak interlocking and insufficient penetration due to the reduced formability of advanced high-strength steel (AHSS). A new process named electroplastic SPR (EP-SPR) was proposed by Luo et al [19] to reduce the deformation resistance of AHSS DP780 by applying a direct current (dc) to it during SPR process. The influence of dc on force and displacement characteristics throughout the riveting process, joint physical attributes, and quasi-static performances for two sheet combinations, e.g., AA6061-T6 to DP780 (combination 1) and DP780 to AA6061-T6 (combination 2), were studied and compared with the traditional SPR joints.…”

Section: Introductionmentioning

confidence: 99%

Self-piercing riveting of similar and dissimilar titanium sheet materials

Wang

et al. 2015

Int J Adv Manuf Technol

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Self-piercing riveting is a relatively new high-speed mechanical joining technique. The present paper deals with the join-ability of similar and dissimilar titanium sheets by self-piercing riveting and the mechanical properties of the self-piercing riveted joints. Tensile-shear tests were carried out to characterize the mechanical properties of different self-piercing riveted joints made of the similar titanium sheets and the dissimilar metal sheet combinations. The normal hypothesis tests were performed to examine the rationality of the test data. The load-bearing capacity, energy absorption, and failure modes of different titanium sheet self-piercing riveted joints were studied. Results showed that the load-bearing capacity of self-piercing riveted joints with titanium as upper sheets are higher than that of the self-piercing riveted joints with titanium as lower sheets.

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Behavior and Quality Evaluation of Electroplastic Self-Piercing Riveting of Aluminum Alloy and Advanced High Strength Steel

Cited by 44 publications

References 31 publications

Self-piercing riveting-a review

Self-piercing riveting-a review

Effects of process parameters on friction self-piercing riveting of dissimilar materials

Self-piercing riveting of similar and dissimilar titanium sheet materials

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