Abstract
The effect of alloying element addition in grey cast iron is great interest of materials developers. In the same context, the effect of adding niobium on mechanical properties of grey cast iron is reviewed. Microstructure and hardness test are reviewed to examine the mechanical properties of alloyed grey cast iron. The study indicated that increasing niobium results in increasing hardness due to which wear rate reduces and also reduces the lamellar spacing between the graphite layers. The reduction in lamellar spacing is due to decreases in eutectic temperature with the addition of niobium. Additionally, mechanical properties including hardness and wear resistance were enhanced after adding niobium.
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