| Popis: |
The paper reports the molecular dynamics simulation results on the behavior of a copper crystallite in local frictional contact. The crystallite has perfect defect-free grains and contains a high-angle grain boundary of type Σ5. The influence of the initial structure on the specimen behavior under loading was analyzed. It was found that, depending on the orientation of the grain boundary with respect to the direction of loading, various processes of plastic deformation of the sample are possible, for example, grain-boundary slipping and moving of grain boundaries or the formation of structural defects, such as dislocations and vacancies. |
