OBRABOTKA METALLOV

Abstract
The strain resistance of the aluminum alloy АД0 during deformation in near solidus temperatures ranging between 540 and 640 °С and strain rates ranging between 0.06 and 1.2 s^–1 are studied in the article. It is found that the strain resistance increases with the growth of strain. It can be due to the passing dynamic recovery that inhibits the start of the dynamic recrystallization. At the temperature ranging from 560 to 640 °С, the АД0 alloy has an abnormal behavior of the strain resistance curve. It is expressed in an inverse strain-rate dependence of strain resistance. This behavior may result in the barrier effect of blocking free dislocations by dopant atoms in the strain-rate range from 0.06 to 0.1 s^–1.

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