Investigation On The Deformation Mechanism Of Metallic Nanowires

Electronic plating plays an important role in the national economy. With the development of science and technology, computer simulation will become an important assistant tool for the study of microscopic structure and behavior of material. In this Paper, we studied the deformation behaviors of transitional metallic nanowires (NWs) with different grain boundary in order to solve the innerstress problem in electrodeposited coating, based on the self-developed ultra-large nanosimulation program. The effects of crystallographic grain boundary, grain size, temperature and strain rate were considered to understand the elastic and palstic deformation behaviors of the metal NWs. The specific contents include the following parts:1. Investigation on the tensile deformation mechanism of the spherical grain Ag nanowiresMolecular dynamics simulations are used to study the deformation of the silver NWs containing spherical grains under tensile loading. We studied the effect of the diameter of the spherical grains of the polycrystalline on the plastic deformation of Ag nanowires.2. Investigation on the tensile deformation mechanism of the nanocrystalline Ag nanowiresMolecular dynamics simulations are used to study the deformation of the nanocrystalline Ag nanowires under tensile loading. The plastic deformation of nanocrystalline Ag, with columnar grains, has been studied by molecular dynamics simulations.3. Investigation on the tensile deformation mechanism of the nanocrystalline Ag nanowires at different temperatureBased on the study of the plastic deformation of nanocrystalline Ag with columnar grains. It is revealed that different grain aspect ratios have induced the difference of deformation mechanisms of nanocrystalline Ag.4. Investigation on the tensile deformation mechanism of the twin boundary Ag nanowiresWe studied the effects of crystal lographic grain boundary, grain size, temperature and strain rate were considered to understand the elastic and palstic deformation behaviors of the metal NWs.