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Metallurgy, Vol.53 No.1 January 2014. -

The paper presents a parametric analysis of friction stir spot welding FSSW of aluminium alloy 5754 in a lap joint. Experimental plan was done according to the response surface methodology RSM, where tool rotation speed varied between 988 and 3511 rpm, plunge rate between 24,4 and 150 mm-min and dwell time between 1 and 3,5s. The plunge depth was held constant at 0,4 mm. The welds were tensile-shear tested and the microstructure was analysed. Mathematical models describing the relationship between welding parameters and spot strength, axial force and rotational moment were developed and the optimal FSSW parameters were found.

friction stir spot welding; EN-AW 5754; force measurement; dynamometer; tensile test



Autor: D. Klobčar - ; Faculty of Mechanical Engineering, University of Ljubljana, Slovenia J. Tušek - ; Faculty of Mechanical Engineer

Fuente: http://hrcak.srce.hr/



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