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Cooling of austenite of eutectoid composition at 723^oC results in formation of ________

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Cooling of austenite of eutectoid composition at 723^oC results in formation of ________

(a) Ledeburite

(b) Sphereoidite

(c) Pearlite

(d) Bainite

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This interesting question is from Transformation of Steel and Cast Iron topic in chapter Constitution of Alloys and Phase Diagrams of Engineering Material & Metallurgy

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Correct option is (c) Pearlite

To explain I would say: The eutectic reaction of cast iron occurs at 1148^oC. Below the eutectic temperature, the cast iron consists of austenite crystals and ledeburite. Cooling of this alloy below 723^oC transforms austenite into pearlite.

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