Abstract
This study exclusively deals with surface integrity aspects, such as residual stresses, surface roughness, and micro-hardness, in the end milling of Inconel 625 using TiAlSiN-coated carbide-cutting tools distinctively developed for dry machining of the nickel-based superalloy. The aim of this research was to build up a set of guiding principles, which would help out the selection of the proper cutting conditions and tool geometry to enhance surface integrity of nickel-based superalloy Inconel 625. As part of the study, the effect of cutting speed, feed per tooth, radial depth of cut and radial rake angle on surface roughness, residual stresses and micro-hardness was studied. It was observed from results of analysis of variance that the surface roughness is significantly influenced by feed per tooth, followed by cutting speed, while radial depths of cut and radial rake angle have a small influence. The experimental results revealed that the minimum surface roughness (0.084 µm), residual stress (123.2 Mpa) and maximum micro-hardness (344) were observed at higher cutting speed (90 m/min), positive radial rake angle (13°), lower feed per tooth (0.05 mm/tooth), and lower radial depth of cut (0.2 mm). Based on the experimental analysis, it was observed that the higher cutting speed, the lowest feed per tooth, and lower radial depth of cut coupled with the use of positive radial rake angle can ensure induction of superior surface integrity in the machined surfaces.
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References
Hanasaki, S., Fajiwara, J., Touse, M.: Tool wear of coated tools when machining and high nickel alloy. Annu. CIRP 39(1), 77–80 (1990)
Davim, J.P.: Surface Integrity in Machining. Springer-Verlag, London (2010)
Ren, X.D., Zhan, Q.B., Yang, H.M., Dai, F.Z., Cui, C.Y., Sun, G.F., Ruan, L.: The effects of residual stress on fatigue behavior and crack propagation from laser shock processing-worked hole. Mater. Des. 44, 149–154 (2013)
Henriksen, E.K.: Residual stresses in machined surfaces. Trans. ASME 73, 69–74 (1951)
Ee, K.C., Dillon, O.W., Jawahir, I.S.: Int. J. Mech. Sci. 47(2005) 1611
Guo, Y.B., Li, W., Jawahir, I.S.: Surface integrity characterization and prediction in machining of hardened and difficult-to-machine alloys: a state-of-art research review and analysis. Mach. Sci. Technol. 13, 437–470
Ulutan, D., Ozel, T.: Int. J. Mech. Tools Manuf. 51(2011), 250
Kundrák, J., Mamalis, A.G., Gyani, K., Bana, V.: Surface layer microhardness changes with highspeed turning of hardened steels. Int. J. Adv. Manuf. 53, 105–112 (2011)
Thakur, D.G., Ramamoorthy, B., Vijayaraghavan, L.: Effect of cutting parameters on the degree of work hardening and tool life during high-speed machining of Inconel 718. Int. J. Adv. Manuf. 59, 483–489 (2012)
Krolczyk, G., Nieslony, P., Legutko, S.: Microhardness and Surface Integrity in turning process of duplex stainless steel (DSS) for different cutting conditions. J. Mater. Eng. Perform. 23, 859–866 (2014)
Jiang, W., More, A.S, Brown, W.D., Malshe, A.P.: A cBN-TiN composite coating for carbide inserts: Coating characterization and its applications for finish hard turning. Surf. Coat. Tech. 201(2006), 2443–2449
Dogra, M., Sharma, V.S., Sachdeva, A., Suri, N.M., Dureja, J.S.: Tool wear, chip formation and workpiece surface issues in CBN hard turning: a review. Int. J. Precis. Eng. Man. 11, 341–358 (2010)
Groover, M.P.: Fundamentals of Modern Manufacturing: Materials, Processes, and Systems, 4th edn, pp. 585. Wiley, New York (2010)
Production Technology HMT, Ch. 3 Machinability Aspects in Machining, pp. 53–68. Tata McGraw Hill, Bangalore, India (1980)
Ezugwu, E.O.: Key improvements in the machining of difficult-to-cut aerospace superalloys. Int. J. Mach. Tools Manuf. 45, 1353–1367 (2005)
Dry Machining’s Double Benefit, Machinery and Production Engineering, pp. 14–20 (1994)
Ezugwu, E.O., Wang, Z.M., Machado, A.R.: The machinability of nickel-based alloys: a review. J. Mater. Process. Technol. 86, 1–16 (1999)
Kaya, Eren, Akyuz, Birol: Effects of cutting parameters on machinability characteristics of Ni-based super alloys: a review, published by De Gruyter Open. Open Eng. 7, 330–342 (2017)
Pawade, R.S., Joshi, S.S., Brahmankar, P.K.: Int. J. Mach. Tools Manuf. 48, 15–28 (2008)
Bhopale, Nandkumar N., Joshi, Suhas S., Pawade, Raju S.: Experimental investigation into the effect of ball end milling parameters on surface integrity of Inconel 718. J. Mater. Eng. Perform. 24, 986–998 (2015)
Moufki, A., Le Coz, G., Dudzinski, D.: End milling of Inconel 718 super alloy—an analytical modeling
Singaravel, B., Selvaraj, T.: A review of micro hardness measurement in turning operation, applied mechanics and materials. ISSN: 1662–7482, Vols. 813–814, pp. 274–278. https://doi.org/10.4028/www.scientific.net/AMM.813-814.274
El-Wardany, T.I., Kishawy, H.A., Elbestawi, M.A.: Surface integrity of die material in high speed hard machining, part 2: microhardness variations and residual stresses. J. Manuf. Sci. Eng. 122/633 (2000)
Ezugwu, E.O., Pashby, I.R.: High speed milling of nickel-based superalloys. J. Mater. Process. Technol. 33, 429–437 (1992)
Phadke, M.S.: Quality Engineering Using Robust Design. Prentice Hall, Englewood Cliffs (1989)
Acknowledgements
This study would not have been completed without the immense cooperation and help given by National Facility of texture and OIM IIT Bombay, Advance machining centre Walchand College of Engineering Sangli, and Salbro engineers, Andheri, Mumbai, and the authors thank them for their support and gesture.
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Rajguru, R., Vasudevan, H. (2019). Effect of Machining Parameters on Surface Integrity in End Milling of Inconel 625. In: Shunmugam, M.S., Kanthababu, M. (eds) Advances in Forming, Machining and Automation. AIMTDR 2018. Lecture Notes on Multidisciplinary Industrial Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-32-9417-2_42
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DOI: https://doi.org/10.1007/978-981-32-9417-2_42
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