WSEAS Transactions on Applied and Theoretical Mechanics
Print ISSN: 1991-8747, E-ISSN: 2224-3429
Volume 9, 2014
Joining of Dissimilar Aluminium Alloys AA2014 T651 and AA6063 T651 by Friction Stir Welding Process
Authors: ,
Abstract: In this work joining of two dissimilar aluminium alloys AA2014 T651 and AA6063 T651 was carried out using friction stir welding. The weld was obtained by varying its tilt angle (2◦-4◦), tool offset (0.5mm towards AS, centre line, 0.5mm towards Rs) and Pin diameter (5mm – 7mm). Tensile strength & %Elongation was carried out to evaluate the strength of the weld. Optical microscope study was carried out to study the uniform stirring of materials. The result shows that better interlocking and bonding of materials occurs at 4 degree tilt angle. The tensile strength is better when the tool is offset towards AA2014 side because of complete fusion of harder material. When, it is offset towards AA6063 side results in insufficient heat generation on advancing side. This leads to incomplete fusion of AA2014. Pin diameter has greatest impact on heat generation. The 6 mm pin diameter, 4 degree tilt angle and 0.5 mm offset towards advancing side give the optimum tensile strength of 371 MPa.
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Pages: 179-186
WSEAS Transactions on Applied and Theoretical Mechanics, ISSN / E-ISSN: 1991-8747 / 2224-3429, Volume 9, 2014, Art. #15