Abstract
At present, the demand to the improvement in the characteristic of steel material is expanded in the various directions with development of industrial technology, investigation of the improvement is performed. We focus on precipitation hardening in strengthening mechanism of steel materials. In this study, we simulate an influence of copper precipitates on motion of an edge dislocation using Molecular Dynamics (MD) method in the iron-copper model alloys. As the result, we clarify the conducts of dislocation and the change of shear stress in a precipitate neighborhood, consider the hardening mechanism.
