The effects of addition of lanthanides and zir- conium on mechanical properties and recovery behavior of AA 2618 aluminum alloy have been studied. The apparent activation energies of recovery process of the alloys, ob- tained from the change in micro-hardness were in the range 31.34 to 46.15 kJ mol~!. Lanthanides have caused the de- crease in recovery rate and the increase in creep resistance of examined alloys.
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