Production of Dislocation Loops by a Combined Climb and Glide Mechanism

Abstract

Studies of dislocations in elongated aluminum crystals by diffraction electron microscopy revealed narrow dislocation loops lying parallel to 〈112〉. These loops formed only behind screw dislocations, their long parts then having edge character. Four mechanisms have been proposed to account for the formation and stabilization of the narrow loops through the condensation of point defects.