A dislocation line in a fcc crystal dissociates into two partials which have their Burger vectors as $$\frac{a}{6}\left[ {2\overline 1 \overline 1 } \right]$$ and $$\frac{a}{6}\left[ {11\overline 2 } \right],$$ Indicate the correct statement.
A. Burgers vector of the undissociated dislocation line is $$\frac{a}{2}\left[ {10\overline 1 } \right]$$
B. Burgers vector of the undissociated dislocation line is $$\frac{a}{2}\left[ {1\overline 1 0} \right]$$
C. Energy of each partial is proportional to $$\frac{{{a^2}}}{3}$$
D. Energy of the undissociated dislocation line is lesser than the sum of energy of two partials
Answer: Option A
This Question Belongs to Metallurgical Engineering >> Physics Of Metals In Metallurgy
When the wavelength of the incident X-Tay increases the angle of diffraction
A. decreases
B. increases
C. remains constant
D. shows no systematic variation
A. Burger vector and the dislocation line are Parallel to each other for screw dislocations
B. Burger vector and the dislocation line are perpendicular to each other for edge dislocations
C. Screw dislocations glide parallel to its Burger vector
D. Edge dislocations glide parallel to its Burger Vector
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