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Q1. Differentiate between the given three types of plain carbon steels.

a) Eutectoid
b) Hypoeutectoid
c) Hypereutectoid

Q2. A 0.90% C hypereutectoid plain carbon steel is slowly cooled from 900°C to a temperature just slightly above the 723°C. Compute the weight percent proeutectoid cementite and weight percent austenite present in this steel.

Q3. A 1.10% C hypereutectoid plain carbon steel is slowly cooled from 900°C to a temperature just slightly below the 723°C.

a) Compute the weight percent preutectoid cementite present in the steel

b) Compute the weight percent eutectoid cementite and the weight percent eutectoid ferrite present in steel.

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  • Category:- Physics
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