Effect of the shoulder size and dwell time on the static Strength and fracture mode of projection friction stir spot welded 2024 aluminum alloy

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ZARGHANI F.; MOUSAVIZADEH S.M.; EBRAHIMI GH.R.; EZATPOUR H.R.

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Paper Information

Journal: JOURNAL OF NEW MATERIALS Year:2018 | Volume:8 | Issue:4 (32) Page(s): 13-29

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Title

Effect of the shoulder size and dwell time on the static Strength and fracture mode of projection friction stir spot welded 2024 aluminum alloy

Author(s)

ZARGHANI F. | MOUSAVIZADEH S.M. | EBRAHIMI GH.R. | EZATPOUR H.R. | Issue Writer Certificate

Keywords

Friction stir spot weldingQ1

2024Aluminium alloyQ2

mechanical propertiesQ1

Fracture modeQ2

Abstract

Automotive industry has developed a variant of the Friction Stir Welding named Friction stir spot welding (FSSW), to replace resistance spot welding (RSW) for aluminum sheets. It is claimed that the use of energy and the investment cost are decreased with using of Friction stir spot welding in comparison with resistance spot welding. However, one of the disadvantages of FSSW technique is that a keyhole generally remains at the center of the stir zone. Keyhole defect can reduce the mechanical properties of FSSW joints. A novel Friction stir spot welding technique was developed with the purpose to improve the mechanical property of the joints by removing the keyhole. This novel FSSW method was applied to 2024 Al alloy sheets, 1 mm in thickness, under different shoulder size and dwell times. The effect of shoulder size and dwell time on the mechanical properties of the spot joints has been studied. Studies show that this new spot welding technique can produce a defect-free metallurgical bond with a homogenous fine grain microstructure. The welding parameters variations change the bonding area, depth stir zone, upper sheet thickness, grain size and mechanical properties of the welds.

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References

INVESTIGATION OF SUSCEPTIBILITY TO INTERGRANULAR CORROSION OF WELDMENTS OF AA 6061 ALUMINUM ALLOY PRODUCED BY FRICTION STIR WELDING

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APA: Copy

ZARGHANI, F., MOUSAVIZADEH, S.M., EBRAHIMI, GH.R., & EZATPOUR, H.R.. (2018). Effect of the shoulder size and dwell time on the static Strength and fracture mode of projection friction stir spot welded 2024 aluminum alloy. JOURNAL OF NEW MATERIALS, 8(4 (32) ), 13-29. SID. https://sid.ir/paper/169879/en

Vancouver: Copy

ZARGHANI F., MOUSAVIZADEH S.M., EBRAHIMI GH.R., EZATPOUR H.R.. Effect of the shoulder size and dwell time on the static Strength and fracture mode of projection friction stir spot welded 2024 aluminum alloy. JOURNAL OF NEW MATERIALS[Internet]. 2018;8(4 (32) ):13-29. Available from: https://sid.ir/paper/169879/en

IEEE: Copy

F. ZARGHANI, S.M. MOUSAVIZADEH, GH.R. EBRAHIMI, and H.R. EZATPOUR, “Effect of the shoulder size and dwell time on the static Strength and fracture mode of projection friction stir spot welded 2024 aluminum alloy,” JOURNAL OF NEW MATERIALS, vol. 8, no. 4 (32) , pp. 13–29, 2018, [Online]. Available: https://sid.ir/paper/169879/en

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