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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 |
Answer» D. strength increase | |
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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