The influence of the structure of ultrafine-grained aluminium alloys on their mechanical properties under dynamic compression and shock-wave loading

被引：8
|
作者：
Brodova, I. G. [1 ]
Petrova, A. N. [1 ,2 ]
Naimark, O. B. [3 ]
Plekhov, O. A. [3 ]
Razorenov, S. V. [4 ]
Shorokhov, E. V. [5 ]
机构：
[1] Russian Acad Sci, Ural Branch, MN Miheev Inst Metal Phys, 18 S Kovalevskaya St, Ekaterinburg 620990, Russia
[2] Ural Fed Univ, 19 Mira St, Ekaterinburg 620002, Russia
[3] Russian Acad Sci, Ural Branch, Inst Continuous Media Mech, 1 Acad Korolev St, Perm 614013, Russia
[4] Russian Acad Sci, Inst Problems Chem Phys, 1 Acad Semenov Ave, Chernogolovka 142432, Moscow Region, Russia
[5] Fed State Unitary Enterprise, Russian Fed Nucl Ctr, EI Zababakhin All Russian Res Inst Tech Phys, 13 Vasiliev St,POB 245, Snezhinsk 456770, Chelyabinsk Reg, Russia
来源：
ALL-RUSSIAN CONFERENCE WITH INTERNATIONAL PARTICIPATION MODERN PROBLEMS OF CONTINUUM MECHANICS AND EXPLOSION PHYSICS DEDICATED TO THE 60TH ANNIVERSARY OF LAVRENTYEV INSTITUTE OF HYDRODYNAMICS SB RAS | 2017年 / 894卷
关键词：
SUBMICROSECOND STRENGTH; PLASTIC-DEFORMATION; ENERGY-DISSIPATION; YIELD STRENGTH; FRACTURE; RESISTANCE; AMTS;
D O I：
10.1088/1742-6596/894/1/012016
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Mechanical properties of commercial A3003 and A7075 aluminum alloys having ultrafine-grained structure formed under dynamic channel angular pressing were investigated. It was shown that yield strength of ultrafine-grained alloys at the wide range of strain rates from 2 10-3 to 1.5 105 s(-1) are higher than of coarse-grained alloys. The values of dissipated energy ratio of the ultrafine-grained alloys were compared concerning their different structures and strain rate of 3.5-6.6 103 s(-1). Under shock-wave loading the decreasing of strength was observed for both investigated UFG alloys against quasi-static deformation at the strain rate of 103 s(-1).
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页数：9
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