Effect of low-velocity impact on mechanical property and fatigue life of DP590/AA6061 self-piercing riveted joints

Zhao, Yi-Guang; Huang, Zhichao; Jiang, Yu-Qiang

doi:10.1088/2053-1591/ac4d54

Cited by 9 publications

(9 citation statements)

References 39 publications

(44 reference statements)

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“…However, due to the complicated forming and heating process, the cost of AA7075 and AA2024 alloys is relatively high, which is not the ideal section for the automobile industry. Due to the higher cost-performance, light weight and good plasticity, the AA6061 aluminum alloy is extensively used in multi-material design of body-in-white and aircraft [8,9]. Self-piercing riveting (SPR) is a new deformation connection technology.…”

Section: Introductionmentioning

confidence: 99%

Mechanical performance and failure modes of self-piercing riveted joints between AA6061 and solution-treated TC4 alloy

Huang

Jiang

et al. 2023

Mater. Res. Express

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TC4 titanium alloy and AA6061 aluminum alloy are widely used in the transportation industry because of their excellent mechanical properties and lightweight. In this work, the TC4 titanium alloy was solution heat treated between 800℃ and 990℃ for 1 hour, and water cooled to room temperature. The riveting and tensile tests at room temperature were conducted to evaluate the joint performance. The tensile strength and failure morphology were used to discuss the mechanical performance of joints. Solution heat treatment significantly improves the elongation, mechanical performance, and hardness of TC4 titanium alloy. Compared with the as-received material, the elongation of the treated TC4 titanium alloy is increased by 13% at the solution temperature of 900℃, the tensile strength was added by 175 MPa at 930℃, and the hardness was significantly increased. The optimal performance of the TC4 titanium alloy can be obtained at 930℃. The tensile strength of the joint with the TC4 alloy solution heat treated at 930℃ is the highest of all joints. When the TC4 alloy was solution treated between 800℃ and 850℃, the rivets were pulled from the AA6061. While at 900℃ and 930℃, the AA6061 sheet was broken at the rivet. At 960℃ and 990℃, the TC4 sheet was broken near the rivet. The crack size of TC4 titanium alloy gradually decreases from the rivet outward, and the crack spreads around the rivet. Severe friction can be found, which causes the peeling of the lower plate AA6061 alloy. The breaks of TC4 alloys were the plastic broken. The failure morphology of the TC4 alloy sheet is different under different solution heat treatment temperatures.

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Section: Introductionmentioning

confidence: 99%

Mechanical performance and failure modes of self-piercing riveted joints between AA6061 and solution-treated TC4 alloy

Huang

Jiang

et al. 2023

Mater. Res. Express

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“…The main sources of impact wear on the SPR joints come from the impact of stones or gravel, hail, and raindrops during the driving of the automobile [9]. The speed of this type of impact breakage is usually between 1 and 10 ms −1 , and it is often referred to as the low-speed impact [9][10][11]. Generally, the low-speed impact wear causes a minimal effect on component surface quality.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, the residual tensile strength [22,23], residual flexural strength [24,25], residual fatigue life [26,27], and residual kinetic properties [28] of impact-damaged composite laminates are investigated. Zhao et al [9] studied the impact behavior of self-piercing riveted joints made of dissimilar materials (DP590/AA6061) at impact energies of 5 J, 10 J, 20 J, and 30 J, and the results show that low-speed impact does not change the tensile failure mode of the joint, but significantly reduces its mechanical self-locking performance. Khoramishad et al [29] studied the effect of stacking order on the low-speed impact behavior of metal laminates, and revealed that the impact performance of metal laminates is mainly influenced by the number of metal layers and the material properties of the first and last metal layers.…”

Section: Introductionmentioning

confidence: 99%

Low-Speed Impact and Residual Mechanical Performance of the BR1200HS/AA6082 Self-Piercing Riveted Joints

Jia,

Huang,

Jiang

2023

Metals

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To investigate the low-speed impact response of the BR1200HS steel and AA6082 aluminum alloy self-piercing riveted (SPR) joint, low-speed impact tests with impact energies of 2.5 J, 5.0 J, 7.5 J, 10.0 J, 12.5 J, 15.0 J, 20.0 J, and 30.0 J were conducted utilizing a drop hammer impact tester. The results show that with the increased impact energy, the visual breakages of the SPR joints become more severe. The maximum impact energy the joints can sustain ranges from 10.0 J to 12.5 J. When the impact energy is less than 12.5 J, the contact force/energy–time curves show similar variations. Moreover, as the impact energy increases, total uptake energy value (Et), maximum uptake energy value (Ef), and maximum contact force (Fm) of the joints increase gradually. The low-speed impact energy has little effect on the maximum static tensile force of the impacted joints. However, the residual energy values decrease with the increase in impact energy. The tensile failure form of the joints is the pulling out of the rivets from the lower plates, and the low-speed impacts have no significant effect on the tensile failure form of the joints.

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“…These materials need to be connected. Self-Piercing Riveting (SPR) technology can effectively realize the connection of lightweight materials, and is widely used in production [ 3 , 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Insight of Salt Spray Corrosion on Mechanical Properties of TA1-Al5052 Self-Piercing Riveted Joint

et al. 2022

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Self-piercing riveted (SPR) joints in automobiles inevitably suffer from corrosion damage and performance reduction. In this work, the influence of salt spray corrosion on the mechanical properties of TA1-Al5052 alloy SPR joints was studied. The TA1-5052 SPR joints were prepared and salt spray tests were carried out for different durations. The static and fatigue strengths of the joints after salt spray corrosion were tested to analyze the effect of salt spray duration on the performance of the joints. The results show that the joints’ static strength and fatigue strength decrease with prolonged salt spray time. The salt spray duration affects the joint’s tensile failure mode. The tensile failure without corrosion and with a short salt spray time is the fracture failure of the lower aluminum sheet, and the tensile failure of the joints after a long time of salt spray corrosion is the failure of the rivets. The fatigue failure form of the SPR joint is the formation of fatigue cracks in the lower aluminum sheet, and salt spray time has little effect on the fatigue failure form. Salt spray corrosion can promote the initiation and propagation of fatigue cracks. The fatigue crack initiation area is located at the boundary between the lower aluminum sheet and the rivet leg. The initiation of cracks originates from the wear zones among the sheet metal, rivets, and salt spray particles.

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Effect of low-velocity impact on mechanical property and fatigue life of DP590/AA6061 self-piercing riveted joints

Cited by 9 publications

References 39 publications

Mechanical performance and failure modes of self-piercing riveted joints between AA6061 and solution-treated TC4 alloy

Mechanical performance and failure modes of self-piercing riveted joints between AA6061 and solution-treated TC4 alloy

Low-Speed Impact and Residual Mechanical Performance of the BR1200HS/AA6082 Self-Piercing Riveted Joints

Insight of Salt Spray Corrosion on Mechanical Properties of TA1-Al5052 Self-Piercing Riveted Joint

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