Manufacturing Technology 2016, 16(4):786-792 | DOI: 10.21062/ujep/x.2016/a/1213-2489/MT/16/4/786

Tensile Properties of AA6156-T4 Friction Stir Welded Joints in As-Welded and Post-Weld Aged Condition

Umberto Prisco, Fabio Scherillo
Department of Chemical, Materials and Production Engineering, University of Napoli Federico II, Piazzale Tecchio 80 - 80125 Napoli, Italy

The effect of the T62 post-weld heat treatment on the tensile strength of AA6156-T4 friction stir welded joints is studied. To this aim, the 0.2% proof stress and the tensile strength of as-welded and post-weld treated joints as function of the rotating and welding speed was analyzed performing a complete factorial design with three levels for each studied parameter. Statistical analyses were carried out to establish empirical models of the tensile properties of the joints as a function of the studied welding parameters. The obtained models were validated through statistical tools such as Mallow's CP, S, R2 and R2(adj). The developed regression models can be effectively used to predict the mechanical proprieties of the joints at 95% confidence level.

Keywords: friction stir welding, AA6156, DOE, ANOVA, tensile properties

Published: August 1, 2016  Show citation

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Prisco U, Scherillo F. Tensile Properties of AA6156-T4 Friction Stir Welded Joints in As-Welded and Post-Weld Aged Condition. Manufacturing Technology. 2016;16(4):786-792. doi: 10.21062/ujep/x.2016/a/1213-2489/MT/16/4/786.
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