I agree with Sergei Tarasov. With 5xxx alloys low tool rotation and traverse speeds should be used.
The choice of processing parameters would depend on a number of factors - starting temper of the alloy, the tool materials, its shoulder diameter, pin geometry and its dimensions, and type of backing plate used - to name a few. I would recommend referring to the research articles dealing with friction stir welding of 5XXX series aluminum alloys, and make your starting point with the one which closely matches with your experimental conditions.
Does the heat treatment of the rotating tool has an influence on the weld joint properties? THANKS ALL OF YOU
As long as the tool does not wear during processing/welding, the joint properties should not depend on the type of heat treatment given to the tool.
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