Mechanical Engineering - Engineering Materials - Discussion

Discussion Forum : Engineering Materials - Section 6 (Q.No. 3)
3.
The temperature point at which the change starts on heating the steel is called
lower critical point
upper critical point
point of recalescence
point of decalescence
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.

Sunny said:   1 year ago
It's called phase change.

Gaurav said:   6 years ago
They are asking about temperature points.

We know that up to the upper critical structure, not changes. As we heat above the upper critical then structure changes start.
(1)

Pathan said:   6 years ago
According to the iron carbon diagram changes in phase starting from the lower critical point.

For Better understanding refer FE-C diagram.

Sandy said:   7 years ago
Please explain the answer.

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