A simple-cubic crystal with a lattice parameter of 0.2 nm has a low-angle tilt boundary of 5°. Calculate the spacing (D) between edge dislocations in the tilt boundary.
What will be an ideal response?
The relationship between the tilt angle (?) the magnitude of the Burger’s vector (b) and the dislocation spacing (D) is given by
tan ? = tan 5°= 0.087= b/D = 0.2 nm/D
D = 0.2 nm/0.087 = 2.3 nm
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