Effect of Tool Rotation Speed and Dwelling Time on Mechanical Properties of Al-Mg Sheets Welded By Protrusion Friction Stir Spot Welding

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MOHAMMADNIA H.; MOUSAVIZADEH S.M.; EZATPOUR H.R.

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Paper Information

Journal: Modares Mechanical Engineering Year:2020 | Volume:20 | Issue:1 Page(s): 25-34

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Information Journal Paper

Title

Effect of Tool Rotation Speed and Dwelling Time on Mechanical Properties of Al-Mg Sheets Welded By Protrusion Friction Stir Spot Welding

Author(s)

MOHAMMADNIA H. | MOUSAVIZADEH S.M. | EZATPOUR H.R. | Issue Writer Certificate

Keywords

In this researchQ1

the effect of tool rotation speed and dwelling time on the strength of the welds produced by protrusion friction stir spot welding (PFSSW) was investigatedQ1

This simple novel technique involves the use of a designed circular protrusion on the backing anvilQ1

Welding was performed by pinless tools on the AA5053 sheets with a thickness of 1 mm at tool rotation speeds of 630-2000 rpm and dwelling times of 6 sQ1

12 sQ1

and 18 sQ1

Appearance surface of produced welds was the smooth and free keyhole in comparison with conventional friction stir spot weldingQ1

Tensile-shear test results showed that all welds were failed in circumferential failure modeQ1

Maximum and minimum peak loads were obtained at 1600 rpmQ1

18 s (4Q1

9 kN) and 1000 rpmQ1

12 s (3Q1

5 kN)Q1

respectivelyQ1

Maximum and minimum elongations were obtained at 2000 rpmQ1

18 s (5 mm) and 2000 rpmQ1

6 s (2Q1

3 mm)Q1

respectivelyQ1

Maximum and minimum failure energies were obtained at 2000 rpmQ1

18 s (12Q1

3 J) and 1000 rpmQ1

12 s (3Q1

1 J)Q1

respectivelyQ1

Abstract

In this research, the effect of tool rotation speed and dwelling time on the strength of the welds produced by protrusion friction stir spot welding (PFSSW) was investigated. This simple novel technique involves the use of a designed circular protrusion on the backing anvil. Welding was performed by pinless tools on the AA5053 sheets with a thickness of 1 mm at tool rotation speeds of 630-2000 rpm and dwelling times of 6 s, 12 s, and 18 s. Appearance surface of produced welds was the smooth and free keyhole in comparison with conventional friction stir spot welding. Tensile-shear test results showed that all welds were failed in circumferential failure mode. Maximum and minimum peak loads were obtained at 1600 rpm, 18 s (4. 9 kN) and 1000 rpm, 12 s (3. 5 kN), respectively. Maximum and minimum elongations were obtained at 2000 rpm, 18 s (5 mm) and 2000 rpm, 6 s (2. 3 mm), respectively. Maximum and minimum failure energies were obtained at 2000 rpm, 18 s (12. 3 J) and 1000 rpm, 12 s (3. 1 J), respectively.

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APA: Copy

MOHAMMADNIA, H., MOUSAVIZADEH, S.M., & EZATPOUR, H.R.. (2020). Effect of Tool Rotation Speed and Dwelling Time on Mechanical Properties of Al-Mg Sheets Welded By Protrusion Friction Stir Spot Welding. MODARES MECHANICAL ENGINEERING, 20(1 ), 25-34. SID. https://sid.ir/paper/178470/en

Vancouver: Copy

MOHAMMADNIA H., MOUSAVIZADEH S.M., EZATPOUR H.R.. Effect of Tool Rotation Speed and Dwelling Time on Mechanical Properties of Al-Mg Sheets Welded By Protrusion Friction Stir Spot Welding. MODARES MECHANICAL ENGINEERING[Internet]. 2020;20(1 ):25-34. Available from: https://sid.ir/paper/178470/en

IEEE: Copy

H. MOHAMMADNIA, S.M. MOUSAVIZADEH, and H.R. EZATPOUR, “Effect of Tool Rotation Speed and Dwelling Time on Mechanical Properties of Al-Mg Sheets Welded By Protrusion Friction Stir Spot Welding,” MODARES MECHANICAL ENGINEERING, vol. 20, no. 1 , pp. 25–34, 2020, [Online]. Available: https://sid.ir/paper/178470/en

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