Transition between flow-drill screwing systems considering joining process and joint characteristics

Altvater, Stephan; Sikora, Sebastian P.; Siefkes, Tjark

doi:10.1016/j.aime.2022.100091

Cited by 5 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[8][9][10][11][12][13] Due to the physical and mechanical differences of these materials as well as the formation of brittle intermetallic compounds, conventional resistance spot welding methods for steel joints fail to achieve an effective joint for dissimilar materials. [14][15][16] Consequently, several new joining technologies have emerged to address this challenge, including self-piercing riveting (SPR), [17] flow drill screw (FDS), [18] friction stir welding, [19] friction stir spot welding, [20] and cold metal transition welding. [21] Serving as cold processes of mechanical joining, SPR and FDS are characterized by stable rivet quality, firm connection, dustless operation, and easy mechanization, facilitating their extensive applications in joining dissimilar materials for automotive manufacturing.…”

Section: Introductionmentioning

confidence: 99%

“…[ 8–13 ] Due to the physical and mechanical differences of these materials as well as the formation of brittle intermetallic compounds, conventional resistance spot welding methods for steel joints fail to achieve an effective joint for dissimilar materials. [ 14–16 ] Consequently, several new joining technologies have emerged to address this challenge, including self‐piercing riveting (SPR), [ 17 ] flow drill screw (FDS), [ 18 ] friction stir welding, [ 19 ] friction stir spot welding, [ 20 ] and cold metal transition welding. [ 21 ]…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion behavior of riveted joints with electrophoretic treatment in neutral salt spray environment

Qin,

Tang,

Wei

et al. 2024

Materials & Corrosion

View full text Add to dashboard Cite

This study delves into the corrosion behavior of riveted joints with electrophoretic treatment in a neutral salt spray environment using tensile test and surface analysis. The results showed that the open‐circuit potentials of the dual‐phase steels (590DP and 780DP) exceeded those of the AlSi10MnMg‐T7 and JDA1b die‐casting aluminum alloys by 100 mV, and exceeded that of the AA6063‐T6 extruded aluminum alloy by 50 mV. AlSi10MnMg‐T7 and JDA1b die‐casting aluminum alloys were more susceptible to corrosion in contrast to the AA6063‐T6 extruded aluminum alloy. The corrosion mechanism of the steel/aluminum riveted joints was not only galvanic corrosion but also oxygen concentration polarization. Over the 720‐h corrosion period, the failure loads of the riveted joints were not reduced at all. On the contrary, they increased at least 17% for the two‐sheet self‐piercing riveting (SPR) joints, 6% for the three‐sheet SPR joints, and 4% for the flow drill screw joints.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of riveted joints with electrophoretic treatment in neutral salt spray environment

Qin,

Tang,

Wei

et al. 2024

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…The screws then pierce the connected plates due to the axial downward force, the thread is formed on the plates, and a fastening connection is obtained. [13,14] The FDS process can achieve single-side connection and is adopted by more car manufacturers.…”

Section: Introductionmentioning

confidence: 99%

Forming Quality and Microstructure Evolution of AA6061‐T6 Aluminum Alloy Joint during Flow Drill Screwing Process

Huang

Shan³

et al. 2023

Adv Eng Mater

View full text Add to dashboard Cite

Flow drill screwing (FDS) is the optimal process to realize the single‐side connection of metal sheets. However, the plastic deformation and high fractional temperature during the plate connection process significantly impact the mechanical properties and microstructure of the metal sheets. Herein, the AA6061‐T6 sheet is connected by the FDS process, and the forming quality and microstructure evolution of the alloy are studied. The results show that the plate and the screw are mechanically connected. Obvious plastic deformation and recrystallization occur in the aluminum alloy around the screw, resulting in a fine‐grained zone near the joint interface. The recrystallization phenomenon in the central bushing region promotes the intermolecular fusion between the plates. The high temperature in the connection process partially promotes the dissolution of the strengthening phase, resulting in a decreased strength of the alloy matrix near the screw. The softening zone and hardening zone appear in the plates after the connection, and the hardness values are 55.8% and 105.7% of the alloy matrix.

show abstract

“…Costas et al [23] investigated the influence of a pre-hole on the joint strength and the failure behaviour of flow-drill screw connections [23]. This thermomechanical joining method enables the joining of different material pairs based on one-sided accessibility [24,25]. The central result of the investigations from Costas et al is the fact that a pre-hole under shear load reduces the joint strength but significantly increases the ductility.…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical Joining of Hypoeutectic Aluminium Cast Plates

Borgert,

Neuser,

Hoyer

et al. 2023

JMMP

View full text Add to dashboard Cite

Consistent lightweight construction in the area of vehicle manufacturing requires the increased use of multi-material combinations. This, in turn, requires an adaptation of standard joining techniques. In multi-material combinations, the importance of integral cast components, in particular, is increasing and poses additional technical challenges for the industry. One approach to solve these challenges is adaptable joining elements manufactured by a thermomechanical forming process. By applying an incremental and thermomechanical joining process, it is possible to react immediately and adapt the joining process inline to reduce the number of different joining elements. In the investigation described in this publication, cast plates made of the cast aluminium alloy EN AC-AlSi9 serve as joining partners, which are processed by sand casting. The joining process of hypoeutectic AlSi alloys is challenging as their brittle character leads to cracks in the joint during conventional mechanical joining. To solve this, the frictional heat of the novel joining process applied can provide a finer microstructure in the hypoeutectic AlSi9 cast alloy. In detail, its Si is finer-grained, resulting in higher ductility of the joint. This study reveals the thermomechanical joining suitability of a hypoeutectic cast aluminium alloy in combination with adaptively manufactured auxiliary joining elements.

show abstract

Transition between flow-drill screwing systems considering joining process and joint characteristics

Cited by 5 publications

References 10 publications

Corrosion behavior of riveted joints with electrophoretic treatment in neutral salt spray environment

Corrosion behavior of riveted joints with electrophoretic treatment in neutral salt spray environment

Forming Quality and Microstructure Evolution of AA6061‐T6 Aluminum Alloy Joint during Flow Drill Screwing Process

Thermomechanical Joining of Hypoeutectic Aluminium Cast Plates

Contact Info

Product

Resources

About