Effect of Welding Processes on Tensile Behavior of Aluminum Alloy Joints

Friction stir welding and tungsten inert gas welding techniques were employed to weld armor grade aluminum alloy to investigate the effect of welding processes on tensile behavior of weld joints. Tensile tests, Vicker microhardness tests and optical microscopy were performed on developed weld joints and base metal. Welding process influenced tensile behavior and microstructure of weld joints. Friction stir welded joints showed tensile behavior better than tungsten inert gas weld joints.




References:
[1] Threadgill P. L., Leonard A. J, Shercliff H. R. and Withers P. J., (2009).
Friction stir welding of aluminium alloys. International Materials
Reviews, Vol.54, Issue 2, pp. 49-93.
[2] Williams J.C. & Starke Jr A.E. (2003). Progress in structural materials
for aerospace systems. Acta Materialia, 51, 5775–5799.
[3] Mukhopadhyay A.K., (2009). Microstructure and properties of high
strength aluminium alloys for structural applications. Transactions of the
Indian Institute of Metals, Vol. 62, Issue 2, pp. 113-122.
[4] ASM Handbook Volume 2, (1992). Properties and Selection:
Nonferrous Alloys and Special Purpose Materials. ASM International,
USA.
[5] Singh R.K.R., Sharma Chaitanya, Dwivedi D.K., Mehta N.K. and
Kumar P., (2011). The microstructure and mechanical properties of
friction stir welded Al–Zn–Mg alloy in as welded and heat treated
conditions. Materials and Design, Vol. 32, Issue 2, pp. 682–687.
[6] Sharma Chaitanya., Dwivedi D.K., Kumar P (2012). Effect of welding
parameters on microstructure and mechanical properties of friction stir
welded joints of AA7039 aluminium alloy. Materials and Design, 36
(4), 379-390.
[7] Ghosh P.K, Gupta S.R., Gupta P.C., and Rathi R., (1990). Pulsed MIG
welding of Al-Zn-Mg alloy. Materials Transactions, JIM, 31 (8), 723-
729.
[8] Mathers G., (2002). The welding of aluminium and its alloys. Wood
head Publishing Limited, Abington Hall, Abington Cambridge CB1
6AH, England Taban E., Kaluc E (2007). Comparison between
microstructure characteristics and joint performance of 5086-H32
aluminium alloy welded by MIG, TIG and friction stir welding
processes. Kovove Materials, 45, 241-248.
[9] Mishra R. S. and Ma Z. Y. (2005). Friction stir welding and processing.
Material Science and Engineering: R, 50 (1-2), 1-78.
[10] Sharma Chaitanya., Dwivedi D.K., Kumar P (2012). Effect of welding
parameters on microstructure and mechanical properties of friction stir
welded joints of AA7039 aluminium alloy. Materials and Design, 36
(4), 379-390.
[11] Sharma Chaitanya., Dwivedi D.K., Kumar P (2015). Influence of preweld
temper conditions of base metal on microstructure and mechanical
properties of friction stir weld joints of Al-Zn-Mg alloy AA7039.Journal
of Material Science and Engineering A, 620 (1), 107–119.
[12] Sharma Chaitanya., Dwivedi D.K., Kumar P (2014). Fatigue behavior
of friction stir weld joints of Al–Zn–Mg alloy AA7039 developed using
base metal in different temper condition. Materials and Design, 64(12),
334-344.
[13] Sharma Chaitanya., Dwivedi D.K., Kumar P (2013). Effect of post weld
heat treatments on microstructure and tensile properties of friction stir
welded joints of Al-Zn-Mg alloy AA7039. Materials and Design, 43(1),
134-143.
[14] Kou S (2003). Welding metallurgy 2nd edition, John Wiley & Sons, Inc.,
Hoboken, New Jersey.