
Interpretation:
The difference between entectoid and proeutectoid ferrite in hypoeutectoid steel needs to be explaind. The concentration of carbon in each needs to be determined.
Concept Introduction:
A eutectoid reaction known as a three-phase reaction by which upon cooling, a solid transforms in two another solid phases at a similar time. If the bottom of a single-phase solid field closes, it doen so with entectoid point.protectoid includes protectoid steel ,protectoid ferrite ,protectoid cementite.
Proeutectoid is a phase formed before the decomposition of eutectoid austenite.
In the relationship with primary solids, it is the first phase to from solid austenite.

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Chapter 12 Solutions
Essentials Of Materials Science And Engineering
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