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Abstract

On the microstructural and mechanical characteristics of friction stir spot welded aa1050-o aluminum alloys

Author(s): R.M.Afify, T.S.Mahmoud, S.M.Abd-Rabbo, T.A.Khalifa

In the present investigation, the effect of friction stir spot welding (FSSW) parameters, typically, the tool rotation speed and dwell time on the microstructural and mechanical characteristics offriction stir spot welds aluminum alloy AA1050-O was investigated. The results revealed that the width of the completely metallurgical-bonded region (CMBR) increases with the increasing tool rotational speed and/or the dwell time up to certain levels. Increasing the tool rotational speed and/or the dwell time above these levels reduces the width of CMBR. Increasing the CMBR width increases the tensile-shear strength of the friction stir joint. The maximum tensile-shear force found in the present study was exhibited by the weld that has the CMBR width. The peak temperature measured during FSSW increases with increasing tool rotational speed and/or the dwell time. The maximum peak temperature observed was about 562 oC at 1600 rpm and 14 s.


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Citations : 468

Materials Science: An Indian Journal received 468 citations as per Google Scholar report

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