1. S. Kou, Welding Metallurgy, 2nd ed., Wiley, New York, 2003, p 13–16
2. G. Madhusudhan Reddy, P. Mastanaiah, K. Sata Prasad, and T. Mohandas, Microstructure and Mechanical Property Correlations in AA 6061 Aluminium Alloy Friction Stir Welds, Trans. Indian Inst. Met., 2009, 62(1), p 49–58
3. V. Malin, Aluminum Welded Joints, Study of Metallurgical Phenomena in the HAZ of 6061–T6, Weld. J., 1995, 74(9), p 305-s–318-s
4. R.R. Ambriz, G. Barrera, R. García, and V.H. López, The Microstructure and Mechanical Strength of Al-6061-T6 GMA Welds Obtained with the Modified Indirect Electric Arc Joint, Mater. Des., 2010, 3, p 2978–2986
5. H. Yunjia, R.H. Frost, and D.L. Olson, Edwards, Grain Refinement of Aluminum Weld Metal, Weld. J., 1989, 68, p 280 s