“…This picture is also confirmed by measurements on Cu [ S , 151 and Au [17] which showed a relatively large DMR of type (2), and also by experiments on A1 [16,191,Ag [16,32] and Cu [34] which gave a DMR of type ( l ) , for the following reasons. All these experiments have in common that particular modes of deformation have been applied such as bending [15], wire drawing [ 5 , 16, 17,19,34] and swaging [32] which are predestined to form strain-field-rich dislocation arrays (pile-ups), compared with, for example, stretching and particularly rolling.…”