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HOVSEPIAN, Papken, LUO, Quanshun, ROBINSON, Gary, PITTMAN, M., HOWARTH, Martin, DOERWALD, D., TIETEMA, R., SIM, W.M., DEEMING, A. and ZEUS, T. (2005). TiAlN/VN superlattice structured PVD coatings: A new alternative in machining of aluminium alloys for aerospace and automotive components. Surface and Coatings Technology, 201 (1-2), 265-272.
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Hovsepian_TiAlN-VNSuperlattice(AM).pdf - Accepted Version Creative Commons Attribution Non-commercial No Derivatives. Download (1MB) | Preview |
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. © 2006 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PVD; superlattice coatings; TiAlN/VN; aluminium alloy cutting; tool wear; Applied Physics; 0204 Condensed Matter Physics; 0306 Physical Chemistry (incl. Structural); 0912 Materials Engineering |
| Identification Number: | https://doi.org/10.1016/j.surfcoat.2005.11.106 |
| Page Range: | 265-272 |
| SWORD Depositor: | Symplectic Elements |
| Depositing User: | Symplectic Elements |
| Date Deposited: | 06 May 2020 15:01 |
| Last Modified: | 18 Mar 2021 01:50 |
| URI: | https://shura.shu.ac.uk/id/eprint/26058 |
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