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Shock melting of single crystal copper with a nanovoid: Molecular dynamics simulations
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10.1063/1.4757949
/content/aip/journal/jap/112/7/10.1063/1.4757949
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/7/10.1063/1.4757949
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

MSDs of liquid Cu melted at 8500 K under hydrostatic pressure of 280 GPa.

Image of FIG. 2.
FIG. 2.

The Hugoniot T–P relations (a) and global order parameter versus pressure (b) of shocked perfect crystal (black squares) and shocked sample with a nanovoid (red triangles). The solid curve in the T–P relations denotes the equilibrium melting curve fitted with the Simon equation from Ref. 10.

Image of FIG. 3.
FIG. 3.

Time evolutions of MSDs of atoms in the shocked region obtained from shocked perfect crystal under various piston velocities.

Image of FIG. 4.
FIG. 4.

Snapshots at different times of two layers of atoms in the central (100) plane of the shocked sample with a nanovoid under different shock intensities. (a)–(d) correspond to piston velocities of 3.1 km/s, 3.2 km/s, 3.3 km/s, and3.4 km/s, respectively. Atoms are colored according to their order parameters and 0 ps printed in the left plots of (a), (b) refer to the selected time origins, i.e., 0.5 ps after the shock wave passes the void.

Image of FIG. 5.
FIG. 5.

Shocked sample with a nanovoid for . (a) Global order parameter of the void collapsed region versus time. (b) Temporal evolution of temperatures of void collapse region, other shocked region and the shocked region of shocked perfect crystal. (c) The atomic configurations (insets) and RDFs of void collapsed region at various times and RDF of the shocked perfect crystal.

Image of FIG. 6.
FIG. 6.

Time evolutions of MSDs of atoms in the void collapsed region under various piston velocities.

Image of FIG. 7.
FIG. 7.

RDFs of void collapse region, other shocked region and shocked perfect crystal for .

Image of FIG. 8.
FIG. 8.

Time evolutions of local temperature of the void collapsed region and shocked perfect crystal for .

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/content/aip/journal/jap/112/7/10.1063/1.4757949
2012-10-15
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Shock melting of single crystal copper with a nanovoid: Molecular dynamics simulations
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/7/10.1063/1.4757949
10.1063/1.4757949
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