Investigation on Mechanical Properties
of AA6082-AA7075 Friction Stir Welded
Dissimilar Aluminum Alloys
K. Giridharan, G. Chakravarthi, S. Karthick, S. MuthuKumaran,
S. Padmanaban, and M. Kabeerr
Abstract In this present investigation, an effort has been made to evaluate the
mechanical properties of AA6082 and AA7075 dissimilar aluminum alloys were
joints fabricated by the Friction stir welding process (FSW). The effects of FSW
process parameters such as tool revolving speed, welding speed, tool pin profiles,
and axial load also investigated. Three different FSW tool pin profiles are used in
this investigation like straight cylindrical, tapered, and taper threaded. The different
tool speeds are 1000 rpm, 1300 rpm, and 1500 rpm. The welding speeds are utilized
for this investigation is 20 mm/min, 40 mm/min, and 60 mm/min. The unvarying
axial load 2kN is used in this work. The Friction stir welding process is a solid-state
joining process. This method was most suitable for combined two dissimilar alloys
of AA6082-AA7075. This experimental investigation was successfully done with
the help of FSW process parameters. The mechanical properties and quality of the
weld joints were observed after one by material testings. The material testing like
as tensile and hardness test. It is used to determine the process parameters and their
performance measure with the minimum variation. The optimization process was
done with the help of FSW process parameters. In this context, the L9 Orthogonal
array was used in the optimization process. After the end of the experimental investigation, the results indicate the massive tensile strength value is gained by a straight
cylindrical pin profiled tool at a rotational speed of 1300 rpm and the welding speed
is 60 mm/min. The hardness of the weld specimen is increased with the decreasing of
tool revolving speed is 1000 rpm, as well as the traveling speed, which is 20 mm/min
which obtained by a tapered pin profile tool. The results indicate tool pin profile
plays a vital role in getting the quality of the weld joints.
K. Giridharan (B) · G. Chakravarthi · S. Karthick · S. MuthuKumaran · M. Kabeerr
Department of Mechanical Engineering, Easwari Engineering College, Chennai 600089, India
e-mail: girimech4305@gmail.com
S. Padmanaban
Department of Automobile Engineering, VelTech Rangarajan Dr. Sangunthala R&D Institute of
Science and Technology, Avadi, Chennai 600062, India
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Singapore Pte Ltd. 2021
N. Gascoin and E. Balasubramanian (eds.), Innovative Design, Analysis
and Development Practices in Aerospace and Automotive Engineering, Lecture Notes
in Mechanical Engineering, https://doi.org/10.1007/978-981-15-6619-6_31
295
of AA6082-AA7075 Friction Stir Welded
Dissimilar Aluminum Alloys
K. Giridharan, G. Chakravarthi, S. Karthick, S. MuthuKumaran,
S. Padmanaban, and M. Kabeerr
Abstract In this present investigation, an effort has been made to evaluate the
mechanical properties of AA6082 and AA7075 dissimilar aluminum alloys were
joints fabricated by the Friction stir welding process (FSW). The effects of FSW
process parameters such as tool revolving speed, welding speed, tool pin profiles,
and axial load also investigated. Three different FSW tool pin profiles are used in
this investigation like straight cylindrical, tapered, and taper threaded. The different
tool speeds are 1000 rpm, 1300 rpm, and 1500 rpm. The welding speeds are utilized
for this investigation is 20 mm/min, 40 mm/min, and 60 mm/min. The unvarying
axial load 2kN is used in this work. The Friction stir welding process is a solid-state
joining process. This method was most suitable for combined two dissimilar alloys
of AA6082-AA7075. This experimental investigation was successfully done with
the help of FSW process parameters. The mechanical properties and quality of the
weld joints were observed after one by material testings. The material testing like
as tensile and hardness test. It is used to determine the process parameters and their
performance measure with the minimum variation. The optimization process was
done with the help of FSW process parameters. In this context, the L9 Orthogonal
array was used in the optimization process. After the end of the experimental investigation, the results indicate the massive tensile strength value is gained by a straight
cylindrical pin profiled tool at a rotational speed of 1300 rpm and the welding speed
is 60 mm/min. The hardness of the weld specimen is increased with the decreasing of
tool revolving speed is 1000 rpm, as well as the traveling speed, which is 20 mm/min
which obtained by a tapered pin profile tool. The results indicate tool pin profile
plays a vital role in getting the quality of the weld joints.
K. Giridharan (B) · G. Chakravarthi · S. Karthick · S. MuthuKumaran · M. Kabeerr
Department of Mechanical Engineering, Easwari Engineering College, Chennai 600089, India
e-mail: girimech4305@gmail.com
S. Padmanaban
Department of Automobile Engineering, VelTech Rangarajan Dr. Sangunthala R&D Institute of
Science and Technology, Avadi, Chennai 600062, India
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Singapore Pte Ltd. 2021
N. Gascoin and E. Balasubramanian (eds.), Innovative Design, Analysis
and Development Practices in Aerospace and Automotive Engineering, Lecture Notes
in Mechanical Engineering, https://doi.org/10.1007/978-981-15-6619-6_31
295