PSI - Issue 53

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000–000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 53 (2024) 352–366

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the ESIAM23 chairpersons Abstract Inconel 718 is used in many industry sectors, particularly, in the aerospace, automotive and energy industries. This alloy is selected due to its excellent mechanical properties and stability at high temperatures. However, this material is considered difficult to machine. Its high-strength, low thermal conductivity, and tendency to work-hardening, makes the machining of this material quite challenging, generally causing high amounts of tool-wear. To surpass these processing problems, usually, coated tungsten carbide tools are used for machining Inconel 718, due to their high-hardness and wear resistance. In the present work, finishing turning experiments were conducted on Inconel 718 alloy, using TiAlSiN coated WC-Co tools at different cutting parameters. Different values of feed and cutting speed were used. Tool-wear was assessed and characterized, as well as the machined surface quality. Additionally, cutting forces were measured and evaluated, trying to establish relations between the cutting forces and observed tool-wear. It was found that for lower cutting speeds the registered force values were higher, particularly for worn tools. Tool-wear also seemed to increase these cutting force values. Furthermore, numerical simulations of the cutting process, using finite element method, was performed. These simulations were conducted aiming for the prediction of tool-wear and to compare the developed cutting forces with the obtained through this method. A low error value was obtained for the comparison of the force values, and an accurate tool wear distribution was obtained. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the ESIAM23 chairpersons Keywords: Inconel 718; Coated carbide tools; Tool wear; Surface integrity Third European Conference on the Structural Integrity of Additively Manufactures Materials (ESIAM23) CVD-coated tungsten carbide solutions for turning Inconel 718 A. Teixeira a , V. F. C. Sousa b *, T. E. F. Silva b , D. Figueiredo c , F. Marques c , C. Fernandes a,b , A. M. P. Jesus a,b , A. Reis a,b a DEMec, Department of Mechanical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal b INEGI, Institute of Science and Innovation in Mechanical Engineering, University of Porto, 4200-465 Porto, Portugal c PALBIT, S.A. Product Development Department, 3854-908 Branca, Portugal a b c

* Corresponding author. Tel.: +351 22 957 8710. E-mail address: vsousa@inegi.up.pt

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4. 0 ) Peer-review under responsibility of the scientific committee of the ESIAM23 chairpersons

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the ESIAM23 chairpersons 10.1016/j.prostr.2024.01.042