Title: Comparative experimental investigation on tool wear while dry turning of SS 304 and Ti6Al4V

Authors: Uttakantha Dixit; Ramesh Kumar Guduru

Addresses: Department of Mechanical Engineering, School of Technology, Pandit Deendayal Energy University, Gandhinagar, 382007, India ' Department of Mechanical Engineering, School of Technology, Pandit Deendayal Energy University, Gandhinagar, 382007, India

Abstract: Stainless steel 304 and titanium alloys are used extensively in aerospace, biomedical, and automotive industries due to their exceptional mechanical strength, corrosion resistance, and biocompatibility. However, their machinability is hindered by high ductility, leading to challenges in chip formation, increased tool/workpiece heating and poor surface quality. A comparative study was conducted on tungsten carbide tools for wear during dry cutting of SS 304 and Ti6Al4V alloys. Differently prepared tools, i.e., chemically textured inserts, MoS2 lubricant coated textured inserts, TiN coated and hBN+TiN coated inserts were evaluated for their performance in terms of wear on the flank face and nose radius. Results indicated that while machining SS 304, tool wear was more pronounced due to stiction issues, whereas Ti6Al4V showed better performance. Textured and TiN coated tools exhibited superior performance when machining Ti6Al4V. These studies suggest texturing of tools add to the advantage of enhanced tool life in the turning operations.

Keywords: stainless steel; titanium alloy; surface texture; solid lubricant; tool wear; cutting dynamics.

DOI: 10.1504/IJMMM.2024.143663

International Journal of Machining and Machinability of Materials, 2024 Vol.26 No.4, pp.296 - 311

Received: 18 Feb 2024
Accepted: 29 Mar 2024
Published online: 03 Jan 2025 *

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