الفهرس 
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Abstract
In this thesis, friction stir deposition technique has been used to
fabricate samples of two different Aluminum alloys (A356 and
AA2011). Different alloys were used as die-cast AlSi alloy, Wrought,
and annealed AA2011 alloy.
3 Bars of 20 mm diameter of each alloy were used as the feeding
material in the solid sate friction stir deposition to deposit layers over
layers deposited at the aluminum substrate (AA5083). During the
process after fixing the consumable bar on the spindle shank and while
rotating, the bar approaches the substrate at a constant feeding speed,
the bar plastically deformed due to the friction between the rotating
bar and the fixed substrate that causes the material to transfer from the
bar to the substrate under the continuous feeding.
Three solid and defect-free deposited parts have been produced from
each alloy. The optimum parameters have been studied to produce
parts without defects. The spindle rotation speeds used was 200 &
1200rpm and the feeding rate range was (1-9mm/min).
The effect of the spindle rotation rate and the feeding speed on the
deposition process, the microstructure, and the micro hardness of the
deposited parts was investigated.