Friction stir welding (FSW) of AA 5052 H32 to AA 6061 T6 blanks was obtained for each thicknesses of 1 mm and 1.5 mm. Successful welds were obtained at constant tool spindle speed of 1500 rpm and two tool traverse speeds of 63 mm/min and 98 mm/min. For both thicknesses, weld produced at 63 mm/min speed gives more ductility than the weld produced at 98 mm/min. Elongation prior failure of 1.5 mm thick tailor welded blank (TWB) was found to be 47% more than that of 1 mm thickness weld. Microhardness measurement of the dissimilar welds showed lower values at heat-affected zones (HAZ) on both the sides of weld line, whereas lowest hardness value was obtained at HAZ of AA 5052. Optical microscope and energy dispersive spectroscopy (EDS) analyses on the stir zone (SZ) suggest dynamic recrystallization and finer grain size with uniform mixing at the center of SZ. Intermetallic compounds are formed during welding which plays detrimental role in the fracture strength of the joint.
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November 2016
Technical Briefs
A Study on Friction Stir Welding of Dissimilar Thin Sheets of Aluminum Alloys AA 5052–AA 6061
Jyoti K. Doley,
Jyoti K. Doley
Mechanical Engineering Department,
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: j.doley@iitg.ac.in
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: j.doley@iitg.ac.in
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Sachin D. Kore
Sachin D. Kore
Mechanical Engineering Department,
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: sdk@iitg.ac.in
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: sdk@iitg.ac.in
Search for other works by this author on:
Jyoti K. Doley
Mechanical Engineering Department,
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: j.doley@iitg.ac.in
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: j.doley@iitg.ac.in
Sachin D. Kore
Mechanical Engineering Department,
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: sdk@iitg.ac.in
Indian Institute of Technology Guwahati,
Guwahati 781039, India
e-mail: sdk@iitg.ac.in
1Corresponding author.
Manuscript received November 15, 2015; final manuscript received May 19, 2016; published online June 23, 2016. Assoc. Editor: Wayne Cai.
J. Manuf. Sci. Eng. Nov 2016, 138(11): 114502 (6 pages)
Published Online: June 23, 2016
Article history
Received:
November 15, 2015
Revised:
May 19, 2016
Citation
Doley, J. K., and Kore, S. D. (June 23, 2016). "A Study on Friction Stir Welding of Dissimilar Thin Sheets of Aluminum Alloys AA 5052–AA 6061." ASME. J. Manuf. Sci. Eng. November 2016; 138(11): 114502. https://doi.org/10.1115/1.4033691
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