This article is cited in 3 papers

Mechanical properties, strength physics and plasticity

Dislocation structure of plastic relaxation waves in polycrystals and alloys under intense shock wave loading

G. A. Malygin^a, S. L. Ogarkov^b, A. V. Andriyash<sup>b

a</sup> Ioffe Institute, St. Petersburg
^b All-Russia Research Institute of Automatics named after N L Dukhov, Moscow

Abstract: The influence of the structure factors (sizes of grains and precipitates) on the dislocation structure formed in polycrystals and alloys behind the shock wave front (elastic precursor) has been theoretically discussed in terms of the dislocation kinetic relationships and kinetic equation for the dislocation density. The critical conditions of the transition from the cellular dislocation structure to a uniform dislocation distribution have been formulated. These conditions are used to determine the dependences of the critical pressure, above which the dislocation distribution becomes uniform, on the grain size and precipitate volume density.

Received: 29.04.2014

 English version: Physics of the Solid State, 2014, 56:11, 2239–2246

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