Modified friction stir clinching of dissimilar AA2024-T3 to AA7075-T6: Effect of tool rotational speed and penetration depth

Paidar, Moslem; Ghavamian, Sara; Ojo, Olatunji Oladimeji; Khorram, Ali; Shahbaz, Amirhosein

doi:10.1016/j.jmapro.2019.09.028

Cited by 32 publications

(14 citation statements)

References 31 publications

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“…However, with MFSC, limited articles are published so far, that are on Al base materials. MFSC is investigated on AA2024-AA7075 [19,20] and AA2024-AA6061 [21] joint combinations. These studies mention that MFSC is emerging as great alternative of FSSW for spot configuration welds.…”

Section: Introductionmentioning

confidence: 99%

Metallurgical and Mechanical Properties of Al–Cu Joint by Friction Stir Spot Welding and Modified Friction Stir Clinching

2020

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Dissimilar joints of AA5083 and pure Cu joint are successfully produced and compared by friction stir spot welding and modified friction stir clinching with intermediate layer of Zn interlayer for the first time. Self-reacting behavior of Zn is observed to obtain sound welds resulted from intermixing in stir zone (in FSSW), refilled zone (in MFSC) and brazed zone (in both FSSW and MFSC). MFSC is used to fill the cavity of keyhole that in turn increased 40 % strength of dissimilar Cu-Al joints. Presence of lamellar eutectics in brazed zone and intermetallic compounds such as Al2Cu, Al4Cu9, CuZn5 and Cu4Zn in weld zone are confirmed in Cu-Al MFSC joints.

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Section: Introductionmentioning

confidence: 99%

Metallurgical and Mechanical Properties of Al–Cu Joint by Friction Stir Spot Welding and Modified Friction Stir Clinching

2020

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“…They also found that material flow patterns are greatly influenced by shoulder features that in turn useful in improving mechanical properties of joints. Paidar et al [13][14][15][16] developed modified FSC that eliminates exithole by protuberance leveling in second stage using probeless tool. They subjected prob-less tool from the revert side on spot of clinching that in turn lead protuberance of material in the cavity of exit-hole along with similar leveling of base material.…”

Section: Introductionmentioning

confidence: 99%

Effect of shoulder features during friction spot extrusion welding of 2024-T3 to 6061-T6 aluminium alloys

Han

Paidar

Vignesh

et al. 2020

Archiv.Civ.Mech.Eng

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Friction spot extrusion welding process is successfully performed on dissimilar aluminum alloys of AA2024-T3 and AA6061-T6 under the influence of shoulder features. The joints were analysed by microstructural features and mechanical properties using conventional and advanced tools of visual inspection, optical microscopy, scanning electron microscopy, transmission electron microscopy, electron back scattered diffractions, tensile testing and hardness testing. The results revealed that the joining was obtained by combination of mechanical locking from extruded material of top surface to predrilled bottom surface and diffusion in solid state. The stir zone and plastically deformed metal flow zone were influenced by scroll shoulder and smooth shoulder features. The tensile specimen of scroll shoulder was resulted to higher fracture load of 6381 N whereas the same was 4916 N in case of smooth shoulder. The interface of between plastically deformed metal flow zone and base material of AA6061-T6 can be considered as critical/weakest zone in case of friction spot extrusion. The variations of hardness were observed in stir zone, plastically deformed metal flow zone and thermo-mechanically affected zone in case of friction spot extrusion welding process.

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“…They studied the fatigue behavior of the joint and determined the fatigue crack and failure mode. Paidar et al [125,126] improved the friction stir clinching process to improve joint performance. The tensile shear strength and transverse tensile strength of the joints are significantly higher than those of the FSSW joints.…”

Section: Friction Stir Clinching (Fsc)mentioning

confidence: 99%

The State of the Art of Finite Element Analysis in Mechanical Clinching

Zhang

Peng

et al. 2021

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Clinching technology is a mechanical connection technology that is applied to connect metal or non-metal sheet materials. It is widely used in different applications, such as automobile, aircraft, household appliances and other industries. In order to reduce weight, save energy, reduce fuel consumption, reduce pollution and curb global warming, lightweight structures with clinched joint are increasingly used in transportation. The finite element technology is popularized in engineering, so that it can get similar results with the test after investing less time, manpower, energy and material resources, which is conducive to the prediction and smooth progress of the test. A review of the finite element analysis of clinching technology is provided in the present paper. The article's work also discusses the strength of the clinched joint, the factors influencing the clinched joint's strength, the failure mechanism of the clinched joint, etc. Furthermore, the novel technologies of clinching as well as the finite element models and methods used in clinching, are introduced. The present paper's main objective was to review the recent developments in the finite element analysis of clinching and provide a basis for further investigation in this area of research.

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Modified friction stir clinching of dissimilar AA2024-T3 to AA7075-T6: Effect of tool rotational speed and penetration depth

Cited by 32 publications

References 31 publications

Metallurgical and Mechanical Properties of Al–Cu Joint by Friction Stir Spot Welding and Modified Friction Stir Clinching

Metallurgical and Mechanical Properties of Al–Cu Joint by Friction Stir Spot Welding and Modified Friction Stir Clinching

Effect of shoulder features during friction spot extrusion welding of 2024-T3 to 6061-T6 aluminium alloys

The State of the Art of Finite Element Analysis in Mechanical Clinching

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