Journal
TRIBOLOGY INTERNATIONAL
Volume 43, Issue 5-6, Pages 1113-1121Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2009.12.053
Keywords
Wear mechanisms; PVD/CVD coated tools; Inconel 718; Finish turning
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
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This paper presents the results of an experimental investigation on the wear mechanisms of uncoated tungsten carbide (WC) and coated tools (single-layer (TiAlN) PVD, and triple-layer (TiCN/Al2O3/TiN) CVD) in oblique finish turning of Inconel 718. Tool wear rate and wear mechanisms were evaluated for cutting speeds, 50 < V < 100 m/min, and feed rates, 0.075 < f < 0.125 mm/rev, at a constant depth of cut of 0.25 mm. It was concluded that abrasive and adhesive wear were the most dominant wear mechanisms, controlling the deterioration and final failure of the WC tools. While the triple layer CVD coated tools exhibited the highest wear resistance at high cutting speeds and low feeds, uncoated tools outperformed the single and multi-layer coated tools in the low range of cutting speeds and intermediate feeds. The cutting tool with single-layer PVD coating outperformed the other tools at the medium cutting speed. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.
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