Formation of bulk nanostructure metals under dynamic loading

E.V. Shorokhov; I.N. Zhgilev; V.I. Zeldovich; I.G. Brodova; I.V. Khomskaya; A.V. Abramov; I.V. Minaev; N.Yu. Frolova; N.E. Zababakhin; N.P. Oglezneva; P.A. Nasonov; I.G. Shirinkina

doi:doi:10.1051/dymat/2009169

All issues

Volume 2 (2009)

10.1051/dymat/2009169

Abstract

Issue		DYMAT 2009 Volume 2, 2009 DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		1201 - 1207
Section		Micro-Structural Effects
DOI		https://doi.org/10.1051/dymat/2009169
Published online		15 September 2009

DYMAT 2009 (2009) 1201-1207
DOI: 10.1051/dymat/2009169

Formation of bulk nanostructure metals under dynamic loading

E.V. Shorokhov¹, I.N. Zhgilev¹, V.I. Zeldovich², I.G. Brodova², I.V. Khomskaya², A.V. Abramov¹, I.V. Minaev¹, N.Yu. Frolova², N.E. Zababakhin¹, N.P. Oglezneva¹, P.A. Nasonov¹ and I.G. Shirinkina²

¹ Russian Federal Nuclear Center - Zababakhin All-Russia Research Institute of Technical Physics, 456770 Snezhinsk, Russia
² Institute of Metal Physics, RAS Ural Branch, 620041 Ekaterinburg, Russia

Published online: 15 September 2009

Abstract
Structural changes observed in samples of technical-purity titanium, copper, and aluminum alloy AMts (Al–Mn) after severe plastic deformation were studied and results of this investigation are presented. In experiments, materials were loaded with the help of a gun. Samples were accelerated up to the velocity of about 100–400 m/s and then directed into a special matrix consisting of two channels located at 90° to one another. These samples were deformed with the strain rate of ~ 10⁵ s⁻¹; the stagnation pressure in the channel ranged from 2 to 5 GPa. Consideration is given to the relation between loading conditions and the specific nature of structure formation in materials. Under dynamic loading, the coarse-grained structure of the grain in the aluminum alloy becomes ~ 400 nm, and the sub-grain structure with the size of 50–100 nm is formed in copper. Microhardness of materials increases 1.5–2 times.