Title: Micromachining M2 tool steel using nanostructured titanium-doped cutting tools
Authors: Mark J. Jackson, Grant M. Robinson, Waqar Ahmed, Christopher A. Rego, Wolf-Dieter Munz
Addresses: Centre for Advanced Manufacturing, College of Technology, Purdue University, West Lafayette, Indiana IN 47907-2021, USA. ' Centre for Advanced Manufacturing, College of Technology, Purdue University, West Lafayette, Indiana IN 47907-2021, USA. ' Nanotechnology Research Centre, University of Ulster, Newtownabbey, County Antrim, Northern Ireland, BT37 0QB, UK. ' Nanotechnology Research Centre, University of Ulster, Newtownabbey, County Antrim, Northern Ireland, BT37 0QB, UK. ' Materials Research Institute, Sheffield Hallam University, Pond Street, Sheffield, S1 4BU, UK
Abstract: Cation-substituted Til-x-y-zAlxCryY2N 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 Til-xAlxN films. Layers (3 µm thickness) were deposited by unbalanced magnetron sputter deposition to small grain WC-Co unused cutting tools which had been ion etched in situ using a steered Cr-metal-ion cathodic arc discharge at an Ar pressure of 6 × 10-4 mbar (0.45 mTorr). Machining experiments conducted at the meso and micro scales indicated that cutting tool life is improved significantly using yttrium-doped titanium-based coatings when machining M2 tool steel.
Keywords: micromachining; titanium coated cutting tools; tool steels; materials microstructures; hard materials; nanomanufacturing; magnetron sputter deposition; cutting tool life.
International Journal of Nanomanufacturing, 2007 Vol.1 No.3, pp.370 - 388
Published online: 11 May 2007 *
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