The atomistic modeling of wave propagation in nanocrystals

被引：34

作者：

Bringa, EM ^{[1
]}

Caro, A ^{[1
]}

Victoria, M ^{[1
]}

Park, N ^{[1
]}

机构：

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

来源：

JOM | 2005年 / 57卷 / 09期

关键词：

D O I：

10.1007/s11837-005-0119-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents non-equilibrium molecular dynamics simulations of wave propagation in nanocrystals. The width of the traveling wave front increases with grain size, d, as d(1/2). This width also decreases with the pressure behind the front. When the results are extrapolated to micro-crystals, reasonable agreement with experimental data is obtained. In addition, this extrapolation agrees with models that only take into account the various velocities of propagation along different crystalline orientations without including grain boundary effects. The results indicate that, even at the nanoscale, the role of grain boundaries as scattering centers or as sources of plasticity does not increase significantly the width of the traveling wave.

引用

页码：67 / 70

页数：4

共 36 条

[31] A maximum in the strength of nanocrystalline copper [J].