Question

Explain how edge dislocations contribute to ductility in metals ?

Please explain in a good words!!! Thanks

Answer 1

When an extra half plane of atoms is introduced mid-way trrough a crystal, it distorts nearby plane of atoms. This type of dislocation is called edge dislocation.

Ductility is the property of a metals ability to be stretched into a wire when tensile stress is appied.

When tensile stress is applied to stretch a wire, the extra planes of atoms introduced during edge dislocation pass through the planes of other atoms breaking and joining bonds between them. This helps in the stretching of the metal forming a wire.