Question

Mech. Engineering - Materials

1. Describe how dislocations can be generated in a crystal lattice (Frank-Read source).

Answer 1

Dislocation or crystal defects are the irregularities within crystal structure in which either parent atoms escapes from crystal lattice or it kept place within the lattice other than its original position.

Hence there are two types of dislocation in crystal.First in which atoms escapes from its position eg. Schottky defects in which cation with anion escapes from crystal lattice.

Second one is dislocation in which atoms keep position within crystal lattice other'than its original position.eg. Frankal defects .

answered by: anonymous