Sample Preparation

1. Annealing of the hypo eutectoid steel specimen by heating the sample to about 910°C temperature and holding the specimen at this temperature for a definite time, followed by furnace cooling to room temperature in the furnace.
   
2. Normalizing of the hypo eutectoid steel specimen by heating the sample to about 910°C temperature and holding it 1hr at this temperature for homogeneous austenitisation followed by cooling to room temperature in air.
   
3. Hardening of the hypo eutectoid steel specimen by heating the sample to about 910°C temperature and holding it 1hr at this temperature, followed by quenching in water.
   

Polishing
To reveal the microstructure, polish and etch the samples using the procedure described in Experiment 1 in the first set of labs.

Observations under Microscope
Observe each specimen under an optical microscope.