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Effect of the electric potential of the aluminum surface on stress relaxation

S. A. Nevsky, S. V. Konovalov, V. E. Gromov

Siberian State Industrial University, Novokuznetsk

Abstract: The effect of the electric potential of the surface of technically pure A85 aluminum on stress relaxation is studied. It is found that upon a change in the electric potential of the sample from a stabilized power supply, the average relaxation rate increases, and the activation volume decreases upon an increase in the absolute value of the electric potential. If a metal with a work function differing from that of aluminum is connected to the sample, the dependences of the average relaxation rate and activation volume on the contact potential difference are nonmonotonic. The results of experiments are discussed.

Received: 25.08.2010

 English version: Technical Physics, 2011, 56:6, 877–880

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