Abstract
Abstract In part I of this study, extensive evidence for glide on the non-compact plane (001) was obtained in [112] aluminium single crystals under creep conditions at high temperatures. In this part II the same single crystals are used to measure the critical resolved shear stress for (001) glide as a function of strain rate and temperature in constant-strain-rate tests. The observed dependence is in good agreement with the kink-pair mechanism, initially proposed for prismatic glide in hexagonal closepacked metals. The apparent activation enthalpy ΔH 001 for the dislocation glide on (001) is equal to 1.74eV. This model also applies to {110} glide with an apparent activation enthalpy of 1.40eV. The screw dislocation motion predicted by this model in the face-centred cubic structure is in good agreement with the slip-line observations and in situ experiments reported in part I. This model also agrees well with the other non-compact glide characteristics available, such as the activation temperatures of {11...
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