2020
DOI: 10.1007/s13632-020-00696-5
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The Effect of Tool Design on the Friction Stir Welding of Thick Aluminum Alloy AA6082-T651 Extruded Flats

Abstract: Fifteen-millimeter-thick aluminum alloy AA6082-T651 extruded flats were friction-stir-welded by using three different types of tool pin profiles, i.e., (1) conical with only left-hand threads (CL), (2) conical with both left-hand and right-hand threads (CLR), and (3) conical cam-tri-flute with left-hand threads (CTFL) up to a height of 6 mm from the pin tip. The microstructures and the mechanical properties across the weld thickness were characterized. Tunneling defect was found at the weld-bottom for the CL t… Show more

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Cited by 8 publications
(4 citation statements)
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“…The low surface roughness attains at the travel speed of 500 mm/min and the rotation speed of 1400 rpm. Figures [13][14][15] show the macrostructures of the AA1050 BT-FSPed at travel speeds of 50, 100, 200, and 300 mm/min and a constant rotation speed of 600 rpm using three-pin geometries of Tr, Sq, and Cy, respectively. The typical regions of SZ, thermo-mechanically affected zone (TMAZ), heat-affected zone (HAZ), and BM can be observed at all the applied processing parameters.…”
Section: Surface Roughness and Macrostructure Evaluationmentioning
confidence: 99%
See 1 more Smart Citation
“…The low surface roughness attains at the travel speed of 500 mm/min and the rotation speed of 1400 rpm. Figures [13][14][15] show the macrostructures of the AA1050 BT-FSPed at travel speeds of 50, 100, 200, and 300 mm/min and a constant rotation speed of 600 rpm using three-pin geometries of Tr, Sq, and Cy, respectively. The typical regions of SZ, thermo-mechanically affected zone (TMAZ), heat-affected zone (HAZ), and BM can be observed at all the applied processing parameters.…”
Section: Surface Roughness and Macrostructure Evaluationmentioning
confidence: 99%
“…In recent years, FSP technology using a conventional tool (CT) design has been widely applied to aluminum and its alloys only to modify the microstructure of the material surface with and without ceramic particles additions [10,11]. For AA1050 alloy, many researchers have paid attention to utilizing the FSP technique with a CT design for welding [12][13][14] and processing [15][16][17] based on different parameters. Bobbin tool (BT) design is an innovative tool design and was initially used in the FSW of aluminum alloys [18][19][20][21].…”
Section: Introductionmentioning
confidence: 99%
“…The solidstate friction stir welds have showed an efficiency of the order of 90% [12]. Lately, FSW of thick sections has also been explored by researchers [13][14][15][16]. For AA7075 aluminum alloy, Rao et al [13] attained a joint efficiency of 70% and 53% for 10 mm and 16 mm plate thickness, respectively.…”
Section: Introductionmentioning
confidence: 99%
“…Comparisons between FSW and underwater FSW for 19 mm thick AA2519 alloy have also been performed [14]. Further, the impact of tool design and process parameters for thick section FSW of aluminum alloys has also been addressed [15,16]. Due to increase in plate thickness, thermal disparity across the weld depth is found to influence mechanical and microstructural features in AA2219 alloys [17].…”
Section: Introductionmentioning
confidence: 99%