Title: Micromachining M42 tool steel using nanostructured titanium coatings

Authors: M.J. Jackson, G.M. Robinson, W. Ahmed, C.A. Rego, W-D. Munz

Addresses: Center for Advanced Manufacturing, College of Technology, Purdue University, West Lafayette, Indiana IN47907-2021, USA. ' Center for Advanced Manufacturing, College of Technology, Purdue University, West Lafayette, Indiana IN47907-2021, USA. ' Nanotechnology Research Center, University of Ulster, Newtownabbey, County Antrim, Northern Ireland, BT37 0QB, UK. ' School of Biology, Chemistry and Health Science, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK. ' Materials Research Institute, Sheffield Hallam University, Pond Street, Sheffield, S1 4BU, UK

Abstract: The machining of M42 tool steel is discussed in this paper. Traditionally, these materials have been machined using uncoated cutting tools with limited success. New developments in titanium-based coatings such as cation-substituted Ti_l-x-y-zAl_xCry_yY₂N alloys, with y = 0.03 and z = 0.02, have been shown to offer enhanced high-temperature oxidation resistance compared to presently used TiN and Ti_l-xAl_xN films that are deposited to cutting tool surfaces. Machining experiments indicated that cutting tool life is improved significantly using yttrium-doped titanium based coatings, when machining M42 tool steels.

Keywords: tool steel machining; titanium coatings; cutting tools; nanomanufacturing; nanotechnology; nanostructures; tool life.

DOI: 10.1504/IJNM.2008.017847

International Journal of Nanomanufacturing, 2008 Vol.2 No.1/2, pp.163 - 173

Published online: 19 Apr 2008 *

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