Mirza, Asim Ali  <br/><br/>
Ultrasonic Assisted Micro Milling of Inconel 718 / 
Asim Ali Mirza 
 - 56p.  Soft Copy  30cm 
<br/><br/> A super alloy with high temperature resistance, high corrosion resistance, and high strength is<br/>iconel-718, which is based on nickel. In the biomedical, aerospace, marine, and automotive<br/>industries, nickel-based super alloys are frequently used. The super alloy inconel-718 is difficult<br/>to machine and to cut. For greater surface roughness, little tool wear, and minimal burr formation,<br/>which produces better results than conventional micro milling, a methodology using ultrasonic<br/>assisted micro milling is developed to address this problem. This experimental investigation uses<br/>0.5mm diameter cutting tools with various coatings, such as TiAlN, TiSiN, and nACo, to evaluate<br/>the effects of various machining parameters on surface roughness, tool wear, and burr<br/>development. With four levels and five parameters—cutting speed, feed rate, depth of cut, coating,<br/>and amplitude of tool vibration—Taguchi L16 array is used to create experiments. The analysis of<br/>variance is performed using Minitab software. It provides the percentage influence of each<br/>element, and we can identify the best and worst set of parameters to achieve the desired results<br/>using main effect plots. For multi-objective optimization, Grey Relational Analysis (GRA) is used<br/>to determine the best and worst parameter levels for each of the three answers. Confirmatory<br/>experiments revealed that ultrasonic aided micro milling produces better results than traditional<br/>micro milling with an amplitude of vibration of 9 m. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MS Design and Manufacturing Engineering  
<br/><br/><label>Dewey Class. No.: </label>670