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Mechanical Engineering · Q227

Engineering Materials

Engineering and GATE · Mechanical Engineering · question 227

Q227

Eutectoid reaction occurs at

A.
600°C
B.
727°C
Answer
C.
1147°C
D.
1493°C

Answer: Option B

Solution

Answer: Option B
Solution:
In eutectoid reaction, the austenite transforms into a phase mixture of ferrite (containing 0.76% C) and cementite.
This phase mixture is known as pearlite.
The eutectoid reaction occurs at a constant temperature.
This is known as eutectoid temperature and is 727°C.
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