Editing Dislocation (section)

===Partial===
{{main article|Partial dislocations}}

Partial dislocations leave behind a stacking fault. Two types of partial dislocation are the ''Frank partial dislocation'' which is sessile and the ''Shockley partial dislocation'' which is glissile.<ref name="radwan"/>

A Frank partial dislocation is formed by inserting or removing a layer of atoms on the {111} plane which is then bounded by the Frank partial. Removal of a close packed layer is known as an ''intrinsic'' stacking fault and inserting a layer is known as an ''extrinsic'' stacking fault. The Burgers vector is normal to the {111} glide plane so the dislocation cannot glide and can only move through ''climb''.<ref name="hull01"/>

In order to lower the overall energy of the lattice, edge and screw dislocations typically disassociate into a [[stacking fault]] bounded by two Shockley partial dislocations.<ref name=Föll>{{cite web|title=Defects in Crystals|first=Helmut|last=Föll|url=http://dtrinkle.matse.illinois.edu/MatSE584/index.html |access-date=2019-11-09}}</ref> The width of this stacking-fault region is proportional to the [[stacking-fault energy]] of the material. The combined effect is known as an ''extended dislocation'' and is able to glide as a unit. However, dissociated screw dislocations must recombine before they can [[cross slip]], making it difficult for these dislocations to move around barriers. Materials with low stacking-fault energies have the greatest dislocation dissociation and are therefore more readily cold worked.