Abstract
Aluminum is a typical example of the ductile metal and it is significant that we researched the sliding mechanism of grain boundaries. In this study, the atomic structure and electronic state of the Σ=5 (001) twist grain boundary are analyzed with ab-initio molecular dynamics simulation. Our purpose is to clarify the process of Al sliding deformation in consideration of the electronic state. The grain boundary energy and the deformation energy of the grain boundary where there are no dislocations. As the result we discussed the fact that the strength of grain boundary sliding depends on the sliding directions. Moreover, we thought about the grain boundary dislocations.
