Internal friction due to radiation drag of edge dislocation bending vibrations in the Peierls relief when interacting with point defects

Abstract

In this work, an expression is found for generalized susceptibility of an infinite edge dislocation in a real crystal. Effect of the Peierls relief and elastic interaction between the edge dislocation and chain of point defects are taken into account. Small bending vibrations of the edge dislocation in the Peierls valley are considered. An expression is found for internal friction caused by radiation friction of the edge dislocation bending vibrations. As an example, bending vibrations of the edge dislocation in an aluminum crystal with point defects of "substitution atom" type are considered. Graphs of internal friction frequency dependence are plotted for two possible cases of elastic wave emission by the vibrating edge dislocation.