M

Mr. Dubey • 52.30K Points
Coach 

Q. Which of the following will not happen when metal is cooled fast in annealing?

(A) warping of material
(B) cracking of material
(C) formation of thermo elastic stresses
(D) strength increase
Correct : Option (D)

Explanation: 
 a material in annealing is cooled slowly to avoid warping of the material, cracking of the material due to the formation of thermal gradients and thermo elastic stresses inside the body.

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