Mechanical Engineering - Engineering Materials - Discussion

47. 

A fine grained steel

[A]. is less tough and has a greater tendency to distort during heat treatment
[B]. is more ductile and has a less tendency to distort during heat treatment
[C]. is less tough and has a less tendency to distort during heat treatment
[D]. is more ductile and has a greater tendency to distort during heat treatment

Answer: Option B

Explanation:

No answer description available for this question.

Bharath said: (Jul 8, 2019)  
I think option A:- fine grain => hardness increases => ductility decrease.

Bubai said: (Oct 16, 2019)  
Me also with answer A as fine grain means grater grain boundaries and less dislocation movement and great ductility.

Rajendra said: (Oct 23, 2019)  
Compared to grain size formed in cooling in the annealing process, grain size is less in normalisating because of faster rate cooling.

So, fine grain has low ductility.

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