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.