Q.

What is the range of dislocation density in pure and unhardened metals?

A. 1010 – 1012 m-2
B. 1014 – 1016 m-2
C. 104 – 106 m-2
D. 108 – 1010 m-2
Answer» A. 1010 – 1012 m-2
Explanation: pure unhardened metals (real crystal) contain large number of dislocations of the order of1010 – 1012 m-2. so these can easily be deformed.
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