Improvements in the aviation industry raise the usage of titanium and its alloys. Main reasons of using titanium alloys are superior mechanical properties, high strength-to-density ratio, fatigue and corrosion resistance at moderately high temperatures. All these superior properties comes with a major disadvantage as poor machinability. Machining of titanium alloys generates excessive heat in the vicinity of the tool cutting edge so that induces poor tool life. Cutting parameters of titanium alloys are also limited because of fire risk. Previous studies show that Ultrasonic Assisted Turning (UAT) technique gives promising results at aviation materials. UAT changes the relationship between tool and work piece thus reduces cutting force and temperature on the cutting zone. UAT provides better surface finish and roundness for work piece. In this study, machining of Ti6Al4V alloy investigated by literature review and 2D finite element analysis performed to understand the effects of UAT in turning process. UAT simulation results are compared with conventional turning simulation and experimental results performed by previous studies. It is confirmed that UAT technique alters cutting conditions with specific cutting parameters (cutting force, cutting temperature, chip formation) however, it has some limitations. (C) 2015 The Authors. Published by Elsevier Ltd.