i-manager Publications

Residual stress in resistance spot welded aluminum alloy sheets

D. Afshari*, M. Sedighi**, Z. Barsoum***

*-** School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran.

*** Department of Aeronautical and Vehicle Engineering, Royal Institute of Technology, Stockholm, Sweden.

Periodicity:August - October'2012
DOI : https://doi.org/10.26634/jme.2.4.1984

Abstract

In this study, residual stress measurement in resistance spot welded aluminum joint is investigated. A pair of 2 mm thickness aluminum 6061-T6 sheets are prepared and welded according to the American Welding Society (AWS) standard. Due to the small dimensions of nugget and heat affected zone in this process, the X-ray diffraction method utilized for residual stress measurement. The results show that the outside areas of the nugget are influenced by the preliminary sandpaper grinding process. Also, residual stress measurement on the edge of the nugget shows a wide deviation which is due to the changes in surface height. The results imply that, the residual stress measurements in resistance spot welded joints are limited within nugget area for which the grinding stresses were relaxed by the high temperature during welding. The observed residual stresses at this zone show tensile stresses at surface which increase from center toward the edge of the nugget.

Keywords

Residual stress, X-ray diffraction, Spot weld, Aluminum alloys.

How to Cite this Article?

Afshari, D., Sedighi, M., & Barsoum, Z. (2012). Residual stress in resistance spot welded aluminum alloy sheets. i-manager's Journal on Mechanical Engineering, 2(4), 6-9. https://doi.org/10.26634/jme.2.4.1984

References

[1]. Gosh, P.K., Patel, V.K. (2005). Resistance spot repair welding of spot welded steel sheet. Mater. Manuf. Process. 20, 187-204 .

[2]. Sun, X., Stephens, E.V., Khaleel, M.A. (2008). Effect of fusion zone size and failure mode on peak load and energy absorption of advanced high strength steel spot welds under lap shear loading conditions. Eng. Fail. Anal.15, 356-367.

[3]. Lingbi, L., Zhengquan, W., Zili, W., Chunyan, J. (2009). Residual stress relaxation in typical weld joints and its effect on fatigue and crack growth. Acta. Metallurgica Sinica, 22, 202-210.

[4]. Mirsalehi, S.E., Kokabi, A.H., (2010). Fatigue life estimation of spot welds using a crack propagation -based method with consideration of residual stresses effect. Mat. Sci. Eng. A-Struct.527, 6359-6363.

[5]. Ahmet, H.E., Fazil, O.S., (2011). Design optimization of spot-welded plates for maximum fatigue life. Finite. Elem. Anal. Des. 47, 413-423.

[6]. Khanna, S.K., He, C., Agrawal, H.N. (2001). Residual stress measurement in spot welds and the effect of fatigue loading on redistribution of stresses using high sensitivity Moire Interferometry. J. Eng. Mater-T ASME. 123, 132-138.

[7]. Long, X., Khanna, S.K. (2001). Numerical simulation of residual stresses in spot welded joints. J. Eng. Mater-T ASME. 125, 222-226.

[8]. Nodeh, I.R., Serajzadeh, S., Kokabi, A.H. (2008). Simulation of welding residual stresses in resistance spot welding, FE modeling and X-Ray verification. J. Mater. Process. Tech. 205, 60-69.

[9]. Villanova, J., Sicardy, O., Fortune, R., Micha, J.S., Bleuet, P. (2010). Determination of global and local residual stresses in SOFC by X-ray diffraction. Nucl. Instrum. Meth. B. 268, 282-286.

[10]. Gou, R., Zhang, Y., Xu, X., Sun, L., Yang, Y. (2011). Residual stress measurement of new and in-service X70 pipelines by X-ray diffraction method. NDT&E. In. 44, 387-393.

[11]. American National Standard. ANSI/AWS/SAE/ (1997). Weld button criteria, recommended practice for test methods for evaluating the resistance spot welding behavior of automotive sheet steel metal.

[12]. Afshari, D., Sedighi, M., Barsoum, Z., Peng, R. L. (2012). An approach in prediction of failure in Resistance Spot Welded Aluminum 6061-T6 under quasi-static tensile test. Manuf. Eng. Doi: 10.1177/0954405411435198.

If you have access to this article please login to view the article or kindly login to purchase the article

Single Article

	North Americas,UK, Middle East,Europe		India	Rest of world
	USD	EUR	INR	USD-ROW
Online	15	15

ADD TO CART

Options for accessing this content:

If you would like institutional access to this content, please recommend the title to your librarian.
If you already have i-manager's user account: Login above and proceed to purchase the article.
New Users: Please register, then proceed to purchase the article.