Measurement and analysis of surface roughness in turning of aerospace titanium alloy (gr5)

Titanium alloys are extensively used in aerospace, biomedical applications and they are used in corrosive environments. In this study, the effect of cutting parameters on the surface roughness in turning of titanium alloy has been investigated using response surface methodology. The experimental studies were conducted under varying cutting speeds, feed and depths of cut. The chip formation and SEM analysis are discussed to enhance the supportive surface quality achieved in turning. The work material used for the present investigation is commercial aerospace titanium alloy (gr5) and the tool used is RCMT 10T300 – MT TT3500 round insert. The equation developed using response surface methodology is used for predicting the surface roughness in machining of titanium alloy. The results revealed that the feed was the most influential factor which affect the surface roughness.

► Titanium alloy is considered as “Exotic” and needs attention while machining.
► The effect of cutting parameters on surface roughness has been investigated.
► Chip formation, SEM analysis discussed to enhance the supportive surface quality.
► Used a series of round insert with varying the turning parameters was studied.
► Model fitting and experimental study carried out for this kind of materials is new.