This article is cited in 3 papers

Solids

Estimation of copper activation parameters upon a transition from the exponential to power stress dependence of the creep rate

A. I. Petrov, M. V. Razuvaeva

Ioffe Institute, St. Petersburg

Abstract: The results of estimation of activation parameters in the region of exponential (I) and power (II) dependences of the steady-state creep rate of polycrystalline copper on stress were represented. It is shown that the elastic long-range stress produced by dislocations in region I can be determined directly from the dependence of the creep rate on the stress. An energy criterion of the transition from creep region I to region II is proposed.

Received: 08.02.2011

 English version: Technical Physics, 2011, 56:10, 1415–1418

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