Microstructure and mechanical properties of friction stir welded Mg alloy AZ91
- Volovitch P. ,
- Masse J.E. ,
- Baudin T. ,
- et al
- Volovitch P. ,
- Masse J.E. ,
- Baudin T. ,
- Da Costa B. ,
- Goussain J.C. ,
- Saikaly W. and
- Barrallier L.
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Friction stir welding (FSW) was applied to the magnesium alloy AZ91 (Mg, 8.21%Al, 0.64%Zn), optimum welding parameters were derived, structural and mechanical properties of the weld zone were determined, and the influence of microstructure on weld properties was investigated. Bead-on-plate welding tests were performed to optimise process parameters (specimen travel speed, tool rotation speed and welding force) that were subsequently used for butt joints. Weld defects (inner cavities and lack of bonding) were examined by fluorescent penetration tests, radiography and visual inspection. Mechanical properties were characterised by transverse tensile tests and Vickers microhardness measurements. The effect of process parameters on weldability and joint microstructure and mechanical properties is discussed.
5th International Symposium, 14-16 Sep 2004, Session 5B: Copper Alloys/Magnesium Alloys, Paper 03
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