A molecular dynamics analysis for the influence of initial defects for the texture evolution during cold rolling

Abstract

In this study, the texture evolution of iron during cold rolling deformation is evaluated using molecular dynamics. Various properties of metallic materials change according to the crystal orientation. Therefore, controlling crystal orientation (promoting or suppressing the accumulation of specific orientation) is important. The change of crystal orientation due to deformation has been performed by experiments and the theory in the past, but there was a problem that it was difficult to consider the influence of initial defects. In this study, I used molecular dynamics to calculate the change in crystal orientation due to the cold rolling of single crystals containing dislocation loops. From the study of this paper, it was found that the crystal rotation in the molecular dynamics method showed the same tendency as the result of experiment and theory, and the stable crystal orientation did not change by the introduced dislocation loop.