Friction Stir Lap Joining of Blanks under Different Conditions

Carlo Bruni; Alessio D'Orazio; Mohamad El Mehtedi

doi:10.4028/www.scientific.net/KEM.651-653.1433

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 651-653Friction Stir Lap Joining of Blanks under...

Friction Stir Lap Joining of Blanks under Different Conditions

Abstract:

The present investigation aims at studying the effect of the tool geometry and of rotational velocity of the tool, at different welding velocities, on the tensile shear strength of the friction stir welded joints realised with blanks of different thicknesses. The proposed trial and error methodology was based on experiments, numerical simulations and microstructure observations.It was observed that, at the lowest rotational velocity, the slender tool determines tensile shear strength values lower than those obtained with the thick tool in particular at the highest welding velocity investigated. The numerical simulation evidenced a wider stirred zone for the thick tool when compared with that realised with the slender tool at the lowest rotational velocity. Microstructure observations evidenced that the increase in the welding velocity determines reduced stirred zones and an homogenisation of material particularly relevant for the slender tool.

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Periodical:

Key Engineering Materials (Volumes 651-653)

Pages:

1433-1438

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https://doi.org/10.4028/www.scientific.net/KEM.651-653.1433

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Online since:

July 2015

Authors:

Carlo Bruni*, Alessio D'Orazio, Mohamad El Mehtedi

Keywords:

Aluminium Alloy, Finite Element Modelling, Friction Stir Lap Welding

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