Microstructural and Mechanical Behaviors of Friction Stir Welded Dissimilar AA6082-AA7075 Joints
In this research, microstructural events and mechanical behaviors in dissimilar friction stir welding (FSW) of aluminium (Al) alloy AA6082-AA7075 joints have been evaluated to apply aerospace, defense, and military sectors. FSW parametric effects have a more significant impact on the mechanical perf...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/4113895 |
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| author | M. Vetrivel Sezhian K. Giridharan D. Peter Pushpanathan G. Chakravarthi B. Stalin Alagar Karthick P. Manoj Kumar Murugesan Bharani |
| author_facet | M. Vetrivel Sezhian K. Giridharan D. Peter Pushpanathan G. Chakravarthi B. Stalin Alagar Karthick P. Manoj Kumar Murugesan Bharani |
| author_sort | M. Vetrivel Sezhian |
| collection | DOAJ |
| description | In this research, microstructural events and mechanical behaviors in dissimilar friction stir welding (FSW) of aluminium (Al) alloy AA6082-AA7075 joints have been evaluated to apply aerospace, defense, and military sectors. FSW parametric effects have a more significant impact on the mechanical performances and microstructure of produced joints. FSW tool rotational speed, welding speed, and tool plunge speed were chosen to make the weld joints. The rotational tool speeds of 1600 rpm and 2300 rpm, welding speeds of 40 mm/min and 60 mm/min, and tool plunge speeds of 20 mm/min and 30 mm/min were set as the upper and lower limits. A constant axial force of 5 kN was maintained throughout the joint fabrication process. A taper pin-profiled tool was utilized to produce the butt welded joints. Mechanical properties of microhardness, tensile strength, yield strength, elongation, and bending strength of the joints were analyzed. The response of the stir zone microstructure to processing parameters was evaluated using optical microscopy (OM) and fractographic analysis of a tensile specimen shown by scanning electron microscope (SEM). The weld joints produced at 2300 rpm, tool traveling rate of 40 mm/min, and tool plunge speed of 30 mm/min showed the greatest tensile strength of the 191 MPa hardness of 145 Hv at the weld center and also the maximum bending strength of 114.23 N/mm2 was achieved. The lowest bending strength of 25.38 N/mm2 was obtained at 1600 rpm with 60 mm/min due to inappropriate mixing of the base metals and poor joint quality. Furthermore, this study revealed that a higher tool plunge speed facilitates the formation of equiaxed grains in the thermomechanically affected zone (TMAZ) on the advancing side (AS). Additionally, the increment in tool rotational speed significantly improved the tensile strength, weld joint quality, and joint efficiency. |
| format | Article |
| id | doaj-art-9d314f2579074f09b3dcdafdd1ca18c9 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-9d314f2579074f09b3dcdafdd1ca18c92025-02-03T01:24:50ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/41138954113895Microstructural and Mechanical Behaviors of Friction Stir Welded Dissimilar AA6082-AA7075 JointsM. Vetrivel Sezhian0K. Giridharan1D. Peter Pushpanathan2G. Chakravarthi3B. Stalin4Alagar Karthick5P. Manoj Kumar6Murugesan Bharani7Department of Mechanical Engineering, Easwari Engineering College, Chennai 600089, Tamilnadu, IndiaDepartment of Mechanical Engineering, Easwari Engineering College, Chennai 600089, Tamilnadu, IndiaDepartment of Mechanical Engineering, Easwari Engineering College, Chennai 600089, Tamilnadu, IndiaDepartment of Mechanical Engineering, Easwari Engineering College, Chennai 600089, Tamilnadu, IndiaDepartment of Mechanical Engineering, Anna University, Regional Campus Madurai, Madurai 625019, Tamilnadu, IndiaDepartment of Electrical and Electronics Engineering, KPR Institute of Engineering and Technology, Coimbatore 641407, Tamilnadu, IndiaDepartment of Mechanical Engineering, KPR Institute of Engineering and Technology, Coimbatore 641407, Tamilnadu, IndiaSchool of Textile Leather and Fashion Technology, Kombolcha 208, Kombolcha Institute of Technology, Wollo University, South Wollo, EthiopiaIn this research, microstructural events and mechanical behaviors in dissimilar friction stir welding (FSW) of aluminium (Al) alloy AA6082-AA7075 joints have been evaluated to apply aerospace, defense, and military sectors. FSW parametric effects have a more significant impact on the mechanical performances and microstructure of produced joints. FSW tool rotational speed, welding speed, and tool plunge speed were chosen to make the weld joints. The rotational tool speeds of 1600 rpm and 2300 rpm, welding speeds of 40 mm/min and 60 mm/min, and tool plunge speeds of 20 mm/min and 30 mm/min were set as the upper and lower limits. A constant axial force of 5 kN was maintained throughout the joint fabrication process. A taper pin-profiled tool was utilized to produce the butt welded joints. Mechanical properties of microhardness, tensile strength, yield strength, elongation, and bending strength of the joints were analyzed. The response of the stir zone microstructure to processing parameters was evaluated using optical microscopy (OM) and fractographic analysis of a tensile specimen shown by scanning electron microscope (SEM). The weld joints produced at 2300 rpm, tool traveling rate of 40 mm/min, and tool plunge speed of 30 mm/min showed the greatest tensile strength of the 191 MPa hardness of 145 Hv at the weld center and also the maximum bending strength of 114.23 N/mm2 was achieved. The lowest bending strength of 25.38 N/mm2 was obtained at 1600 rpm with 60 mm/min due to inappropriate mixing of the base metals and poor joint quality. Furthermore, this study revealed that a higher tool plunge speed facilitates the formation of equiaxed grains in the thermomechanically affected zone (TMAZ) on the advancing side (AS). Additionally, the increment in tool rotational speed significantly improved the tensile strength, weld joint quality, and joint efficiency.http://dx.doi.org/10.1155/2021/4113895 |
| spellingShingle | M. Vetrivel Sezhian K. Giridharan D. Peter Pushpanathan G. Chakravarthi B. Stalin Alagar Karthick P. Manoj Kumar Murugesan Bharani Microstructural and Mechanical Behaviors of Friction Stir Welded Dissimilar AA6082-AA7075 Joints Advances in Materials Science and Engineering |
| title | Microstructural and Mechanical Behaviors of Friction Stir Welded Dissimilar AA6082-AA7075 Joints |
| title_full | Microstructural and Mechanical Behaviors of Friction Stir Welded Dissimilar AA6082-AA7075 Joints |
| title_fullStr | Microstructural and Mechanical Behaviors of Friction Stir Welded Dissimilar AA6082-AA7075 Joints |
| title_full_unstemmed | Microstructural and Mechanical Behaviors of Friction Stir Welded Dissimilar AA6082-AA7075 Joints |
| title_short | Microstructural and Mechanical Behaviors of Friction Stir Welded Dissimilar AA6082-AA7075 Joints |
| title_sort | microstructural and mechanical behaviors of friction stir welded dissimilar aa6082 aa7075 joints |
| url | http://dx.doi.org/10.1155/2021/4113895 |
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