Effect of Cu and Mo addition on mechanical properties and microstructure of grey cast iron: An overview

Abstract

The addition of any alloying element alters the various properties of developed alloy, wherein mechanical properties influence significantly. The present work reviews the effect of molybdenum (Mo) and copper (Cu) addition in grey cast iron. It alters the few mechanical properties such as tensile strength, hardness and toughness of grey cast iron and are covered in this review article. It is reported that on increasing the percentage of copper and molybdenum in grey cast iron, tensile strength and hardness increases and impact energy decreases. But, beyond a certain amount of copper and molybdenum addition, there is a negligible effect on the hardness. Thus the main role of copper and molybdenum addition, is to reduce the volume of graphite flakes and increase the content of pearlite in microstructure of gray cast iron.