Effect of copper on the properties of au

This thesis investigates the effect of copper on the properties of austempered ductile iron (ADI) castings, aiming to enhance the mechanical performance and thermal stability of the material. The study is motivated by the increasing demand for high-performance materials in various engineering applications. Employing a systematic experimental approach, different compositions of copper were added to ductile iron melt, followed by austempering treatment. The resultant castings were subjected to a series of mechanical tests, including tensile strength, hardness, and impact resistance, alongside microstructural analysis using optical and scanning electron microscopy. The results demonstrated a significant impact of copper content on the microstructure and mechanical properties of the ADI. Specifically, higher copper levels were found to improve the tensile strength and hardness, while also affecting the formation of retained austenite, which is crucial for the performance of ADI. These findings contribute to establishing optimal copper levels for enhancing the properties of ductile iron castings, thereby supporting their applications in industries such as automotive and manufacturing. This work advances the understanding of alloying effects in ductile irons and paves the way for future research in material optimization.