This article is cited in 13 papers

Solids

Mechanical properties and energy dissipation in ultrafine-grained AMts and V95 aluminum alloys during dynamic compression

A. N. Petrova, I. G. Brodova, O. A. Plekhov, O. B. Neumark, E. V. Shorokhov

Institute of Continuous Media Mechanics UB RAS, Perm

Abstract: The thermomechanical characteristics of ultrafine-grained AMts and V95 aluminum alloys with an average crystallite size of 200–600 nm are experimentally studied during dynamic compression. The alloys are fabricated by dynamic channel angular pressing. It is found that the deformation history of the alloys and the initial characteristics of their structural state affect the subsequent plastic deformation and the dissipation of applied energy. The studies of the thermodynamics of deformation in combination with structural investigations before and after dynamic compression allowed us to reveal the main structural relaxation mechanisms in the materials during dynamic compression and to determine the dissipation abilities of various defect structures.

Received: 22.08.2013

 English version: Technical Physics, 2014, 59:7, 989–996

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