منابع مشابه
Stacking - fault energies in simple metals : applications to BCC metals
We present a general method for calculating the stacking-fault energy in simple metals, and then we apply this to the ( 1 1 2 ) faults in body-centred cubic (BCC) metals. Our method contains no approximations for a given wavenumber characteristic (or equivalently the pair potential). Our results show that metastable faults do indeed exist in the simple BCC metals (Li, Na. K, Rb, Cs, Ca. Sr, Ba)...
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Energetic atom collisions in solids induce shockwaves with complex morphologies. In this paper, we establish the existence of a morphological transition in such cascades. The order parameter of the morphology is defined as the exponent, b, in the defect production curve as a function of cascade energy (N(F) ~ E(MD)(b)). Response of different bcc metals can be compared in a consistent energy dom...
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The process of fracture in ductile metals involves the nucleation, growth, and linking of voids. This process takes place both at the low rates involved in typical engineering applications and at the high rates associated with dynamic fracture processes such as spallation. Here we study the growth of a void in a single crystal at high rates using molecular dynamics (MD) based on Finnis-Sinclair...
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The experimental results relevant for the understanding of the microscopic dynamics in liquid metals are reviewed, with special regards to the ones achieved in the last two decades. Inelastic Neutron Scattering played a major role since the development of neutron facilities in the sixties. The last ten years, however, saw the development of third generation radiation sources, which opened the p...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2005
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.71.064109