2008
DOI: 10.1016/j.msea.2007.08.013
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The role of friction stir welding tool on material flow and weld formation

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Cited by 441 publications
(219 citation statements)
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“…Also, from the results observed in figure 9d, can be estimated the thickness of the deformed zone in a direction perpendicular to the shoulder surface. As was stated by Kumar et al [26] the relative size of the deformed zones driven by the shoulder movement with respect to those driven by the pin are determinant for well behaved joints. …”
Section: Velocity Fields and Materials Flowmentioning
confidence: 70%
“…Also, from the results observed in figure 9d, can be estimated the thickness of the deformed zone in a direction perpendicular to the shoulder surface. As was stated by Kumar et al [26] the relative size of the deformed zones driven by the shoulder movement with respect to those driven by the pin are determinant for well behaved joints. …”
Section: Velocity Fields and Materials Flowmentioning
confidence: 70%
“…The greatest attention should be paid to those types of weld defects that are formed at the non-optimal ratio of the plunge force, rotation and feed rate of the tool. Such defects in the weld can result from the interaction of two flows of the plasticized material, one being generated by the working surface of the tool (tool pin) and the other by the tool shoulders [3]. At complete fusion of these flows a defect-free weld is produced while at incomplete fusion tunnel-or wormhole-like defects appear in the weld.…”
Section: Discussionmentioning
confidence: 99%
“…In addition to rotation and welding speeds, used as heat input control parameters, Kumar and Kailas 39 showed the influence of the axial force in the contact area between the tool and the workpiece, and consequently of the heat generated during welding. In the current work, the increase of HI, at reduced spindle speed and increased welding speed, was due to the effect of the axial load, which changed from 22 to 37 kN (Table 2), increasing the contact area between tool and joint.…”
Section: Joining Process and Obtaining Consolidated Full Penetration mentioning
confidence: 99%