NDLI: Resistance Spot Welding of AA5052 Sheet Metal of Dissimilar Thickness

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Resistance Spot Welding of AA5052 Sheet Metal of Dissimilar Thickness

Content Provider	Scilit
Author	Din, N. A. Mat Zuhailawati, H. Anasyida, A. S.
Copyright Year	2016
Description	Journal: Iop Conference Series: Materials Science and Engineering Resistance spot welding of dissimilar thickness of AA5052 aluminum alloy was performed in order to investigate the effect of metal thickness on the weldment strength. Resistance spot welding was done using a spot welder machine available in Coraza Systems Sdn Bhd using a hemispherical of chromium copper electrode tip with radius of 6.00 mm under 14 kA of current and 0.02 bar of pressure for all thickness combinations. Lap joint configuration was produced between 2.0 mm thick sheet and 1.2 - 3.2 mm thick sheet, respectively. Microstructure of joint showed asymmetrical nugget shape that was larger on the thicker side indicating larger molten metal volume. Joint 2.0 mm x 3.2 mm sheets has the lowest hardness in both transverse direction and through thickness direction because less heat left in the weld nugget. The microstructure shows that this joint has coarse grains of HAZ. As thickness of sheet metal increased, the failure load of the joints increased. However, there was no linear correlation established between joint strength and metal thickness due to different shape of fusion zone in dissimilar thickness sheet metal.
Related Links	http://iopscience.iop.org/article/10.1088/1757-899X/114/1/012126/pdf
ISSN	17578981
e-ISSN	1757899X
DOI	10.1088/1757-899x/114/1/012126
Journal	Iop Conference Series: Materials Science and Engineering
Volume Number	114
Language	English
Publisher	IOP Publishing
Publisher Date	2016-02-01
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Materials Science and Engineering Manufacturing Engineering Aluminum Alloy Dissimilar Thickness Resistance Spot Spot Welding Sheet Metal
Content Type	Text
Resource Type	Article

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