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Mechanical Engineering - Engineering Materials - Discussion

Discussion Forum : Engineering Materials - Section 2 (Q.No. 38)
Engineering Materials
38.
When a low carbon steel is heated upto upper critical temperature
there is no change in grain size
the average grain size is a minimum
the grain size increases very rapidly
the grain size first increases and then decreases very rapidly
Answer: Option
Explanation:
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Discussion:
1 comments Page 1 of 1.
Rahul kumar said:   8 years ago
Yes, When a low carbon steel is heated up to upper critical temperature then the average grain size is minimum and grain size would have no change when heated up to low critical temperature and grain size will constantly increase when it is heated further more than upper critical temperature.
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