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Mechanical Engineering - Engineering Materials - Discussion

Discussion Forum : Engineering Materials - Section 5 (Q.No. 47)
Engineering Materials
47.
A fine grained steel
is less tough and has a greater tendency to distort during heat treatment
is more ductile and has a less tendency to distort during heat treatment
is less tough and has a less tendency to distort during heat treatment
is more ductile and has a greater tendency to distort during heat treatment
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.
Bharath said:   6 years ago
I think option A:- fine grain => hardness increases => ductility decrease.
Bubai said:   6 years ago
Me also with answer A as fine grain means grater grain boundaries and less dislocation movement and great ductility.
Rajendra said:   6 years ago
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.
Mahesh said:   4 years ago
I think Option A is correct.
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