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The wide use of titanium alloys in aerospace, automotive and biomedical industry is because of its greater strength properties. However, they are also considered as difficult to cut material due to its small conductivity and chemical reactiveness. This work presents the analysis of the surface roughness for machining Ti-6Al-4V alloy under various cutting conditions. Taguchi’s Design of Experiment technique was employed for conducting tests in a dry environment with carbide tools. ANOVA was carried out to analyze the effect of different combination (feed, speed and depth of cut) on the surface roughness. Results show that resulted roughness of the part varies with the machining conditions. Feed rate has the most significant effect on the roughness of the work part with the contribution of 46%, speed by 38% and the depth of cut 11%. The outcomes reported here can be used to select machining conditions that will help improve the surface integrity of the parts produced from titanium alloys for applications in aerospace, automotive and biomedical use.
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