Cutting performance and wear characteristics of PVD coated and uncoated carbide tools in face milling Inconel 718 aerospace alloy

Citation
A. Jawaid et al., Cutting performance and wear characteristics of PVD coated and uncoated carbide tools in face milling Inconel 718 aerospace alloy, J MATER PR, 116(1), 2001, pp. 2-9
Citations number
18
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
ISSN journal
0924-0136 → ACNP
Volume
116
Issue
1
Year of publication
2001
Pages
2 - 9
Database
ISI
SICI code
0924-0136(20011003)116:1<2:CPAWCO>2.0.ZU;2-H
Abstract
In this paper, cutting performance and failure characteristics of two PVD T iN coated and an uncoated tungsten carbide grades with identical geometry a re presented. Face-milling tests of Inconel 718 superalloy were performed t o investigate the effect of cutting speed and feed rate on tools performanc e under wet conditions. Tools were thoroughly examined under SEM at two sta ges in order to reveal the failure modes and wear mechanisms. These stages were after cutting for 5 s and when the tool failed. It was noted that the coating resulted in a marginal improvement, as it was delaminated by adheri ng workpiece material at the beginning of the cut, impeding the performance of the tool for the rest of the experiment. A combination of progressive c hipping and flank wear was the general mode of tool failure, former being d ominant at high speeds and the latter at the low speed region. Results show ed that uncoated tool performed better than coated tools at low cutting spe eds while coated tools gave slightly better performance as the speed was ra ised. (C) 2001 Elsevier Science B.V. All rights reserved.