Point Defect & Dislocation Interaction | GATE 2021 Metallurgical Engineering Question

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Metallurgical Engineering > GATE 2021 > Dislocation

In the absence of any external stress, which one of the following statements related to the interaction of point defect and a dislocation is FALSE:

A

An oversized solute atom would preferentially migrate below the slip plane of an edge dislocation.

B

A spherically symmetric point defect can interact with both the hydrostatic and shear stress fields of a dislocation.

C

A point defect can locally modify the elastic modulus and thereby can change the interaction energy.

D

Vacancies are attracted towards the compressive region of dislocation.

Correct : b

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