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By Frank R.N. Nabarro, M.S. Duesbery
Dislocations are traces of irregularity within the constitution of a great analogous to the bumps in a badly laid carpet. Like those bumps, they are often simply moved, and so they give you the most vital mechanism during which the cast might be deformed. in addition they have a robust impression on crystal progress and at the digital homes of semiconductors.
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4. A weak-beam image to show the distribution of dislocations in the primary (110){001 } slip in a sample deformed just above the yield stress peak. The plane of the foil sample is (001). The substructure is dominated by screw (S) and edge (E) dislocations, with very few dislocations having mixed characters. Such observations indicate that both screw and edge (110) dislocations are relatively immobile on {001}. Q. Sun, EM. A. Crimp and A. yt_phase 39 plane {001} and the dislocations can be traced over long distances, indicating that they are lying within the foil, and thus their propagation is largely planar.