Abstract: Given its exceptional physical and mechanical properties, Ti-6Al-4V is often considered one of the more challenging titanium alloys to machine, notorious for damaging cutting tools due to its aggressiveness. The aim of this current research is to evaluate the effects of cutting conditions (CS, Doc, and FR), as well as coated (TiN and TiAlN), and uncoated cutting carbides (H13A) on response parameters during the dry machining of the Ti-6Al-4V alloy. Using the ANOVA approache, a set of experiments based on Taguchi L9 were done to find out how different input parameters affected the roughness of the surface. The results, obtained through statistical treatment employing the RSM methodology, facilitated the development of predictive mathematical models for each of the cutting tools. The numerous well-founded results acquired are of interest to mechanical manufacturing companies and academic researchers involved in Ti-6Al-4V studies.

Keywords: Ti-6Al-4V, Turning, ANOVA, Modeling, RSM, Surface roughness, H13A, TiAlN, TiN