TiAIN superlattice structured PVD coatings: a new alternative in the machining of aluminium alloys for aerospace and automotive components

HOVSEPIAN, Papken, LUO, Quanshun, ROBINSON, Gary, PITTMAN, Manfred, HOWARTH, Martin, DOERWALD, D., TIETEMA, R., SIM, W. M., DEEMING, A. and ZEUS, T. (2005). TiAIN superlattice structured PVD coatings: a new alternative in the machining of aluminium alloys for aerospace and automotive components. Surface and coatings technology, 201 (1-2), 265-272.

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Official URL: https://www.sciencedirect.com/science/article/pii/...
Link to published version:: https://doi.org/10.1016/j.surfcoat.2005.11.106

Abstract

A 3 μm thick superlattice structured TiAlN/VN coating has been deposited by the steered cathodic arc/unbalanced magnetron sputtering technique. The coating has been tested in dry high-speed milling of aluminium alloys Al7010-T7651 and AlSi9Cu1 and the performance compared to that of the diamond-like carbon (DLC) coated, TiAlCrYN coated and uncoated tools. In milling the Al7010-T7651 alloy, TiAlN/VN and DLC coated tools showed comparable performance, outperforming TiAlCrYN coated and uncoated tools by a factor of 2.3 and 3.5, respectively. In the case of milling AlSi9Cu1, the DLC coatings failed to produce any lifetime improvement, TiAlCrYN showed 65% longer lifetime thus rendering TiAlN/VN as the best performing coating with 100% longer lifetime compared to that of the uncoated tools. The tests further showed that TiAlN/VN reduces the cutting forces and improves the surface finish. Scanning electron microscopy of the cutting edge carried out after the cutting tests showed that the TiAlN/VN coating significantly reduces metal transfer and built-up edge formation.

Item Type: Article
Additional Information: Copyright © Elsevier B.V.
Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Materials Analysis and Research Services
Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Nanotechnology Centre for PVD Research
Identification Number: https://doi.org/10.1016/j.surfcoat.2005.11.106
Page Range: 265-272
Depositing User: Ann Betterton
Date Deposited: 29 Jul 2008
Last Modified: 18 Mar 2021 02:17
URI: https://shura.shu.ac.uk/id/eprint/586

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