The eutectoid composition of austenite is 0.8 wt %. When it cools slowly it forms perlite, a lamellar or layered structure of two phases: α-ferrite and cementite (Fe3C). Hypoeutectoid alloys contain proeutectoid ferrite plus the eutectoid pearlite. Hypereutectoid alloys contain proeutectoid cementite plus pearlite. Since reactions below the eutectoid temperature are in the solid phase, the equilibrium is not achieved by usual cooling from austenite
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Development of Microstructures in Iron—Carbon Alloys
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Suresh Kumar is a passionate mechanical engineer with deep expertise in design, thermodynamics, manufacturing, and automation. With years of experience in the industry, they simplify complex engineering principles into practical insights for students, professionals, and enthusiasts. This blog serves as a hub for exploring cutting-edge innovations, fundamental concepts, and real-world applications in mechanical engineering.