The Effect of Tool Rotation Speed on Mechanical Properties of Friction Stir Spot Welded (FSSW) AA7075-T6 Aluminium Alloy Sheets

Year 2019, Volume: 3 Issue: 3, 97 - 101, 20.09.2019

Mustafa Uğurlu , Ahmet Çakan

https://doi.org/10.26701/ems.520139

Cited By: 5

Abstract

In this study, the effect of tool rotation speed on the mechanical and
metallurgical properties of friction stir spot welded (FSSW) AA 7075-T6
aluminum alloy plates was investigated. Aluminum alloy plates were joined by FSSW
using welding parameters consisting of three different rotation speeds of 1040,
1320 and 1500 rpm and a constant insertion depth of 3.2 mm. In spot welded specimens,
the highest tensile strength value (6200 N) was obtained in plates welded at a tool
rotation speed of 1500 rpm. The data obtained from the metallographic analysis
are compatible with the tensile test results. Metallographic investigations
demonstrated that there was a small amount of porosity in the welding zone of
the specimens jointed at 1500 rpm.

Keywords

Solid state welding, Friction stir spot welding, Mechanical properties, AA 7075-T6

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