The optimal selection of machining parameters by TOPSIS method during machining of Inconel 718 (superalloy)
Inconel 718
Abstract
The Inconel 718 (superalloy) was machined by using the Tungalloy made tool insert (SNMG 120408 rake =6o, φ=75o). The dry turning was performed in a lathe. The experiments were arranged according to the (Taguchi’s) L9 orthogonal array. The speed, feed and depth of cut (doc) were the input process parameters. The surface roughness (Ra) and chip reduction coefficient (CRC) were the objectives. The collected chips were examined under the scanning electron microscope. The optimal combination of process parameters was identified by using the TOPSIS (technique for order preference by similarity to ideal solution) method. All steps of the TOPSIS method were incorporated for the analysis. The optimum condition (rank1) was attained at the speed of 70 m/min., the feed of 0.06 mm/rev., and the depth of cut (doc) of 1 mm. The ANOVA for surface roughness indicated the higher percentage contribution (50.34%) by the feed. The ANOVA for CRC showed the higher percentage contribution (49.23%) by the speed. The optimal result obtained by using the TOPSIS method was validated by the macroscopic study with the type of chips. The validation study was further explored with reference to the SEM examination of chip surfaces.
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References
R. Thirumalai and J. S. Senthilkumaar, “Multi-criteria decision making in the selection of machining parameters for Inconel 718, “Journal of Mechanical Science and Technology, 27(4), pp. 1109~1116, 2013
Pratham’s Bhat, Chetan Agrawal and Navneet Khanna * “Development of a Sustainability Assessment Algorithm and Its Validation Using Case Studies on Cryogenic Machining,” Advanced Manufacturing Laboratory, Institute of Infrastructure Technology Research and Management (IITRAM), Ahmedabad 380026, India; Journal of manufacturing and materials processing. MDPI, 30th April 2020
Ramakant Rana, R. S. Walia and Qasim Murtaza, “Characterization and Parametric Optimization of Performance Parameters of DLC-Coated Tungsten Carbide (WC) Tool Using TOPSIS,” Coatings, MDPI. 11,760, pp 1-16, June 2021
Mohammad Altaf, Shashi Prakash Dwivedi, Rao Shamsh Kanwar, Imran Ahmad Siddiqui, Pravin Sagar, Shakil Ahmad, “Machining Characteristics of Titanium Ti-6Al-4V, Inconel 718 and Tool Steel – A Critical Review,” IOP Conf. Series, Materials Science and Engineering 691, 2019
A. Iturbea, E. Giraudb, E. Hormaetxea, A. Garaya, G. Germainb, K. Ostolazac, P.J. Arrazolaa, “Mechanical characterization and modelling of Inconel 718 material behavior for machining process assessment, Materials Science and Engineering: A, Elsevier, 682, pp.441-453, 2017
M Anthony Xavior, Mahesh Patil, AbheekMaiti, Mrinal Raj and Nitesh Lohia, “Machinability studies on INCONEL 718,” IOP Conf. Series, Materials Science and Engineering, 149, (2016
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