Johnson J.N., Barker L.M. Dislocation Dynamics and Steady Plastic Wave Profiles in 6061T6 Aluminum

Article. Journal of Applied Physics vol. 40, number 11 (1969), pp. 4321-4334.
Under certain conditions, plastic wave profiles in 6061-T6 aluminium may achieve a constant wave velocity and steady shape within a few millimetres from the impact surface in a plate-impact experiment. The finite rise time of the steady plastic wave is assumed to be controlled by the motion of dislocations within the solid. The theory of steady-propagating waves is presented and theoretically determined wave profiles are compared with those measured experimentally by means of laser interferometry. These studies provide information on dislocation velocity and multiplication under conditions of shock-wave compression.