Chapter 12, Problem 12.54P

Interpretation Introduction

Interpretation:

Theeutectoid portion of FeFe $3$ C phase diagram needs to be sketched. Also, the compositions and temperatures with relevant reactions needs to be explained.

Concept Introduction:

Eutectoid reaction:

A eutectoid reaction is defined as a three-phase reaction where the cooling process is alone on a solid that transforms into other two solid phases at the same time.

The phase diagram consists of the eutectoid point that indicates the location at which 3 solid phases co-exist. In eutectoid reaction, the austenite transforms into a phase mixture of ferrite and cementite.