The Effect of Tool Press Force to Weldability of AA5754 and AA6061 Alloys with Friction Stir Welding Method

Abstract

In this study AA5754 and A6061 alloys have been butt welded to each other by using friction stir welding (FSW). At constant tool geometry and tool angle experiments were carried out, joints were performed using different welding speed, rotation speed and especially tool press force. The mechanical properties of the welded samples were determined by using tensile test, bending test and micro hardness. Generated microstructure and hardness profile was obtained in the welding zone. In this friction stir welding study the parameters which affect the joint structure are the tool press force, welding speed and tool rotation speed which were determined. At the end of study it is determined that AA5754 and AA6061 alloys can be successfully welded by using Friction Stir Welding method under different tool press forces at least 6kN.

Keywords

• Friction stir welding (FSW), AA5754, AA6061, Aluminum alloy, Tool press force.

References

1. Dawes, C. and Thomas, W., “Friction stir joining of aluminum alloys” Bulletin 6, 124-127, 1995.
2. Çam G., ‘Friction Stir Welded Structural Materials: Beyond Al-Alloys’, Int. Mater. Rev., (56) 1, 1-48. 2011.
3. Nandan, R., Debroy, T. and Bhadeshia, H. K. D. H., “Recent advances in friction stir welding-process, Weldment Structure and Properties”, Progress in Materials Science, (53), 980-1023, 2008.
4. Çam G., “Sürtünme Karıştırma Kaynağı Uygulamalarındaki Son Gelişmeler”, Makina Tek., (120) 48-58, 2007.
5. Çam G., “Sürtünme Karıştırma Kaynağı Uygulamalarındaki Son Gelişmeler”, TMMOB Makina Mühendisleri Odası, Kaynak Teknolojisi VI. Ulusal Kongresi, 35-43, Ankara. 9- 10 Kasım 2007.
6. Benavides S., Li, Y., Murr, L.E., Brown, D. and McClure, J. C., Scripta Materialia, 41, 809, 1999.
7. Paola, M., Falchero, A., Cabibbo, M., Evangelista, E., Meccia, E., and Spigarelli, S., “Mechanical and microstructural characterization of an aluminum friction stir-welded butt joint” Metallurgical Science and Technology, 20. 17-21, 2002.
8. G. Çam and M. Koçak, Joining of Advanced Materials, Area 6: Materials Science and Engineering, Topic 6.36.4: Materials Processing and Manufacturing Technologies, edited by Rees D. Rawlings, in Encyclopedia of Life Support Systems (EOLSS), Developed under the auspices of the UNESCO, Eolss Publishers, Oxford, UK.

9. Threadgill, P. L., “Terminology in friction stir welding” Sci. and Tech. of Weld. and Joining, 12.4, 357-360, 2007.
10. Küçükömeroğlu T., Aktarer S. M., Yılmaz H. Kara, L. “ The Structural Examination of IF 7114 Steel Joint by Friction Stir Welding” International Congress on Advances in Welding Science and Technology for Construction, Energy and Transportation Systems (AWST-2011), October pp. 193-198.
11. http://www.twi.co.uk/content/fswintro.html, Friction Stir Welding Rotary. 15 May 2011.
12. Anderson T., “The advancement of Al within welding fabrication industry and product design applications” Svetsaren, 3, 3-5, 2000.
13. Külekçi M.K. ve Şık A., “Sürtünme Karıştırma Kaynağı ile Alüminyum Alaşımı Levhaların Birleştirilmesi ve Elde Edilen Kaynaklı Bağlantıların Mekanik Özellikleri” Süleyman Demirel Üniv. Fen Bil. Ens. Derg., 70-75, 2003.
14. Yılmaz, H., “The Investigation of the Weldability of AA5754 and AA6061 Alloys by Friction Stir Welding” Master Thesis, No:406208, Paje 115, Trabzon. June, 2011, Trabzon.
15. Mishra, R.S. and Ma, Z.Y., “Friction stir welding and processing” Mater. Sci. and Eng.., R50, 1-78, 2005.
16. Lomolino S., Tovo, R., Dos Santos, J., “ On the fatigue behavior of the microstructure and mechanical properties of friction stir welded 6005 aluminum alloy” International Journal Fatigue, 305-316, 2005.
17. Küçükömeroğlu, T., Akyüz, H. and Çalışkan H., “Effects of Some Parameters to AA5754-Cuzn30 Alloys on the Friction Stir Spot Welding Process” 13th. International Materials Symposium, Ekim, pp24-28, Denizli, 2010.
18. Thomas, W. M. and Nicholas, E. D., “Friction stir welding for the transportation industries” Materials and Design, 18, 269-273, 1997.