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Heating of hypereutectoid steels results in formation of coarse pearlite with excess __________

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Heating of hypereutectoid steels results in formation of coarse pearlite with excess __________

(a) Ferrite

(b) Bainite

(c) Cementite

(d) Austenite

This question was posed to me during an interview.

My question is based upon Annealing topic in chapter Heat Treatment of Engineering Material & Metallurgy

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Correct answer is (c) Cementite

Easy explanation: Similar to hypoeutectoid steels, hypereutectoid steels are heated 30-60oC above the A1 line. This results in coarse pearlite with excess cementite in a dispersed spheroidal form. This improves mechanical properties, ductility, and toughness.

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