Reaction Forming a Stair-Rod Dislocation

The following sequence of pictures (taken from "Read and Hull") shows the formation of a Lomer-Cotrell dislocation.
Two perfect dislocations on different {111} planes split into Shockley partials, move until they meet, and react. The end end product of the reaction is a stair-rod dislocation with a Lomer-Cotrell dislocation at its apex.
Stair-rod dislocation

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go to 5.4.3 Some Details for Specific Lattices

© H. Föll (Defects - Script)