INVESTIGADORES
BRINGA Eduardo Marcial
artículos
Título:
The atomistic modeling of wave propagation in nanocrystals
Autor/es:
E.M. BRINGA; A. CARO; M. VICTORIA; N. PARK
Revista:
JOURNAL OF MATERIALS SCIENCE
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2005 vol. 57 p. 67 - 70
ISSN:
0022-2461
Resumen:
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 d1/2.
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.