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Performance Assessment of Different Pin Profiles in Friction Stir Welding of AA2014 Aluminum Alloy: A Microstructural and Mechanical Analysis
In the present investigation, the effect of different tool geometry profiles, including triangular, square, hexagonal, and cylindrical pins, on the microstructure and mechanical characteristics of friction stir welded AA2014 alloys was studied. The friction stir welding resulted in the development of recrystallized fine grains in the nugget zone of the weld sample joined with different tool pin profiles. The microstructural investigation showed considerable differences in the grain size and distribution for various tool geometries within the weld nugget zone. In comparison to other pin profiles, triangular pin profiles showed finer and more uniform grain structures (4.7 microns). The welds made with triangular and square pins showed considerable changes in the weld zone architecture, including the appearance of more refined precipitates such as Al2Cu and Al2MgCu, and these results were supported by EDS analysis. Mechanical property analyses revealed that the tool geometry choice had a significant influence on the welds’ mechanical performance. Compared to hexagonal and cylindrical pins, triangular and square pin profiles have greater hardness values (122 HV) and better tensile strength (359 MPa). Additionally, it was discovered through a fracture behavior analysis that welds made with square and triangular pins had more ductile fracture characteristics, but welds made with hexagonal and cylindrical pins had a comparatively brittle fracture behavior.
Performance Assessment of Different Pin Profiles in Friction Stir Welding of AA2014 Aluminum Alloy: A Microstructural and Mechanical Analysis
In the present investigation, the effect of different tool geometry profiles, including triangular, square, hexagonal, and cylindrical pins, on the microstructure and mechanical characteristics of friction stir welded AA2014 alloys was studied. The friction stir welding resulted in the development of recrystallized fine grains in the nugget zone of the weld sample joined with different tool pin profiles. The microstructural investigation showed considerable differences in the grain size and distribution for various tool geometries within the weld nugget zone. In comparison to other pin profiles, triangular pin profiles showed finer and more uniform grain structures (4.7 microns). The welds made with triangular and square pins showed considerable changes in the weld zone architecture, including the appearance of more refined precipitates such as Al2Cu and Al2MgCu, and these results were supported by EDS analysis. Mechanical property analyses revealed that the tool geometry choice had a significant influence on the welds’ mechanical performance. Compared to hexagonal and cylindrical pins, triangular and square pin profiles have greater hardness values (122 HV) and better tensile strength (359 MPa). Additionally, it was discovered through a fracture behavior analysis that welds made with square and triangular pins had more ductile fracture characteristics, but welds made with hexagonal and cylindrical pins had a comparatively brittle fracture behavior.
Performance Assessment of Different Pin Profiles in Friction Stir Welding of AA2014 Aluminum Alloy: A Microstructural and Mechanical Analysis
J. Inst. Eng. India Ser. D
Sasikala, P. (Autor:in) / Madhusudhan, R. (Autor:in)
Journal of The Institution of Engineers (India): Series D ; 105 ; 1781-1791
01.12.2024
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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