Title: Finite element analysis machining assessment study of AL-6XN and Inconel 718 alloys

Authors: Mohanad Alabdullah; Ashwin Polishetty; Guy Littlefair

Addresses: Projects and Design Department, Rumailah Operating Organisation, Basrah Oil Company, Iraq ' School of Engineering, Auckland University of Technology, New Zealand ' Faculty of Design and Creative Technologies, Auckland University of Technology, New Zealand

Abstract: This paper presents a finite element study to assess machinability of AL-6XN alloy by benchmarking against the machinability of Inconel 718 alloy. Johnson-Cook model was used to represent the alloys plastic strain behaviour, at cutting speeds (65 m/min and 94 m/min). Outcomes reveal that percentage increase of the plastic strain at the beginning of cutting, for Inconel 718 alloy was higher by 18% and 4% at speeds of 65 m/min and 94 m/min respectively. The percentage increase in plastic strain for the AL-6XN alloy during the cutting was higher by 36% and 10% at the same cutting speeds. The shear zone temperature percentages of the AL-6XN alloy increased by 31% and 9.5% at 65 m/min and 94 m/min cutting speed respectively when the tool removed chips. Results indicated that the AL-6XN alloy is suitable for industrial applications (due to the alloy elevated ductility) fabricated at elevated cutting speeds.

Keywords: machinability; finite element analysis; FEA; assessment; stress; strain; temperature.

DOI: 10.1504/IJMMM.2021.121200

International Journal of Machining and Machinability of Materials, 2021 Vol.23 No.5/6, pp.488 - 499

Received: 21 Jun 2021
Accepted: 06 Aug 2021
Published online: 28 Feb 2022 *

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