A dislocation in an fcc crystal with a Burgers vector, b = (a/2)[011], dissociates on the (111) plane into two partial dislocations of the (a/6) type.

A. Give the specific indices of the two (a/6) partial dislocations.

B. Onto what other plane of the {111} family could the b = (a/2)[011] dislocation have dissociated?

C. Give the specific indices of the two (a/6) partials that would be formed if the (a/2)[011] dislocation had dissociated on the plane in B.

 

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