Mo中刃位错运动的分子动力学模拟OA

To investigate the deformation mechanism of Mo,molecular dynamics simulations were conducted to study the motion behavior of edge dislocations in Mo.By changing the simulated temperature and applying stress,the influence of temperature and stress on the movement of edge dislocations in Mo was systematically studied.The simulation results show that the velocity of dislocation motion in pure Mo increases with the increase of stress,showing a linear growth pattern at low stress.As the stress increases,the velocity of motion slows down with the increase of stress.The phonon drag mechanism controls the motion of edge dislocations,and the resistance coefficient increases with temperature,resulting in a decrease in dislocation velocity with increasing temperature.