The strength of single crystal copper under uniaxial shock compression at 100 GPa

被引：83

作者：

Murphy, W. J. ^{[1
]}

Higginbotham, A. ^{[1
]}

Kimminau, G. ^{[1
]}

Barbrel, B. ^{[2
]}

Bringa, E. M. ^{[3
]}

Hawreliak, J. ^{[4
]}

Kodama, R. ^{[5
]}

Koenig, M. ^{[2
]}

McBarron, W. ^{[6
]}

Meyers, M. A. ^{[7
]}

Nagler, B. ^{[1
]}

Ozaki, N. ^{[5
]}

Park, N. ^{[6
]}

Remington, B. ^{[4
]}

Rothman, S. ^{[6
]}

Vinko, S. M. ^{[1
]}

Whitcher, T. ^{[1
]}

Wark, J. S. ^{[1
]}

机构：

[1] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[2] Univ Paris 06, CNRS, CEA,Lab Utilisat Laser Intenses, Ecole Polytech,UMR7605, F-91128 Palaiseau, France

[3] Univ Nacl Cuyo, Inst Ciencias Basicas, RA-5500 Mendoza, Argentina

[4] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[5] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan

[6] AWE, Mat Modelling Grp, Reading RG7 4PR, Berks, England

[7] Univ Calif San Diego, Mat Sci & Engn Program, La Jolla, CA 92093 USA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2010年 / 22卷 / 06期

关键词：

X-RAY-DIFFRACTION; MOLECULAR-DYNAMICS; STRAIN-RATE; PRESSURE; WAVES; DEFORMATION; SIMULATION; PLASTICITY; RANGE;

D O I：

10.1088/0953-8984/22/6/065404

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In situ x-ray diffraction has been used to measure the shear strain (and thus strength) of single crystal copper shocked to 100 GPa pressures at strain rates over two orders of magnitude higher than those achieved previously. For shocks in the [001] direction there is a significant associated shear strain, while shocks in the [111] direction give negligible shear strain. We infer, using molecular dynamics simulations and VISAR (standing for 'velocity interferometer system for any reflector') measurements, that the strength of the material increases dramatically ( to similar to 1 GPa) for these extreme strain rates.

引用

页数：5

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