Low Temperature Physics: 44, 349 (2018); https://doi.org/10.1063/1.5034148
Fizika Nizkikh Temperatur: Volume 44, Number 5 (May 2018), p. 463-490    ( to contents , go back )

Cryodeformation of metals under all-around compression

P.A. Khaimovich

National Science Center “Kharkov Institute of Physics and Technology” 1 Akademicheskaya Str., Kharkov 61108, Ukrain
E-mail: pavel.41@bk.ru

Received August 16, 2017, Revised October 18, 2017

Abstract

When in the 70s of the last century they began to perform low-temperature quasihydroextrusion of metals, it was not immediately realized that this was not simply an extension of the list of methods for plastic deformation of metals at cryogenic temperatures (rolling, drawing, extrusion) to which quasihydroextrusion was added. Both the structures and properties obtained, as well as the peculiarities of the implementation of such deformation, indicated that there was en-try into a new area of plastic deformation, a feature of which, in contrast to the known, is the simultaneous presence of two conditions — cryogenic temperatures and all-round compression. Each of these conditions determines its "contribution" to the formation of the structure formed under such a deformation, and, consequently, in the complex of properties acquired. The process of barocryodeforming (as it is now called) until recently continued to be carried out only where it was born, at the Kharkov Institute of Physics and Technology, but the objects were studied in many laboratories in Ukraine and abroad. The purpose of the proposed generalization of the results of these studies is to draw attention to a new, promising direction in materials science.

PACS: 62.20.F– Deformation and plasticity.

Key words: cryodeformation, all-around compression, quasihydroextrusion, plastic deformation.

Published online: March 27, 2018

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