Microstructure and Surface Roughness Connection on Machined Ductile Iron: An Experimental Determination

Abstract

Ductile iron is useful for a variety of engineering challenges because of its ductility and high strength. Hence, it is an excellent option if machining is required. After milling operations, however, various surface characteristics could be created, and surface roughness could be assessed. On the other hand, machined surface roughness is constrained by production requirements. As a result, the association between surface roughness and machining parameters has been studied in the literature. Studies that focus on the relationship between surface roughness and microstructure in the context of material qualities are also available. In this study, an experimental investigation of a part made of EN-GJS-600-3 material took into account the significance of the interaction between microstructure and surface roughness. In addition to machining parameters, surface roughness, hardness (Brinell Hardness), and microstructure of machined surfaces are taken into consideration. The findings show that surfaces with pearlitic compositions are highly abrasive. Hardness rose along with an increase in the pearlitic phase. The number of spheres and surface roughness follow the same trend.

Keywords

• ductile iron
• machining
• microstructure
• surface quality
• roughness
• experimental investigation