Does normalising steel make it tougher or stronger? For exmaple, compare these t

Question

Does normalising steel make it tougher or stronger?

For exmaple, compare these two 0.4% carbon steel Normalised@860 vs 0.4% carbon steel As drawn.

This is what I wrote but I feel like something is wrong: Heat treatment by normalizing the material makes it stronger. This can’t be seen from table 1 results, which indicates a source of error in calculating the yield and tensile strength. However, the % elongation is greater indicating how normalizing makes the material softer and more ductile. There is no significant difference in %Reduction in CSA but it should be greater after normalizing. This again indicates an error. Furthermore, the young’s modulus of normalized carbon steel is greater than as drawn.

Explanation / Answer

Normalizing makes steel tougher. For example if we are having a rolled or drawn steel. it will be having peoeutectoid phase and pearlite, and is coarse grained and vary in size too. Hence normalizing makes steel with fine grained structure. as we know as grain size reduces strength increases by hindrance to the dislocation motions by fine grain boundaries  

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