Title: Experimental evaluation of the effect of workpiece heat treatments and cutting parameters on the machinability of Ti-10V-2Fe-3Al β titanium alloy using Taguchi's design of experiments

Authors: Navneet Khanna; R.A. Rahman Rashid; Suresh Palanisamy

Addresses: Mechanical Engineering Department, School of Engineering, IITRAM, Ahmedabad – 380026, India ' School of Engineering, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Victoria 3122, Australia; Defence Materials Technology Centre, Victoria 3122, Australia ' School of Engineering, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Victoria 3122, Australia; Defence Materials Technology Centre, Victoria 3122, Australia

Abstract: This industry supported scientific investigation presented the steps taken to gain insight into the phenomena of machining β titanium alloy Ti10.2.3 using design of experiments approach. The influence of cutting parameters and workpiece heat treatments on the cutting forces and temperatures during turning of the aerospace grade Ti-10V-2Fe-3Al (Ti.10.2.3) alloy using Taguchi's design of experiments is presented in this work. An L18 orthogonal array was designed and analysis of variance was performed on the tabulated results to investigate the effects of control variables (i.e., cutting speed, feed rate, and workpiece heat treatment) on the output parameters (i.e., cutting force, feed force, and the cutting temperature). The results showed that the feed rate was the most influential factor and the workpiece heat treatment was the least influential parameter which affected the response variables. Based on this observation, optimal cutting parameters and heat treatment conditions were calculated. This work minimised the number of experiments to be carried out to obtain the optimum machining parameters for this specific titanium alloy (Ti.10.2.3).

Keywords: turning; β titanium; cutting forces; cutting temperature; workpiece heat treatment; Taguchi design of experiments.

DOI: 10.1504/IJMMM.2017.086165

International Journal of Machining and Machinability of Materials, 2017 Vol.19 No.4, pp.374 - 393

Received: 11 Feb 2016
Accepted: 04 Jul 2016
Published online: 28 Aug 2017 *

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