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Tool wear mechanisms of PcBN in machining Inconel 718 : Analysis across multiple length scale

Bushlya, Volodymyr LU ; Lenrick, Filip LU orcid ; Bjerke, Axel LU orcid ; Aboulfadl, Hisham ; Thuvander, Mattias ; Ståhl, Jan Eric LU and M'Saoubi, Rachid LU (2021) In CIRP Annals - Manufacturing Technology 70(1). p.73-78
Abstract

Recently, PcBN tooling have been successfully introduced in machining Ni-based superalloys, yet our knowledge of involved wear mechanisms remains limited. In this study, an in-depth investigation of PcBN tool degradation and related wear mechanisms when machining Inconel 718 was performed. Diffusional dissolution of cBN is an active wear mechanism. At high cutting speed oxidation of cBN becomes equally important. Apart from degradation, tool protection phenomena were also discovered. Oxidation of Inconel 718 resulted in formation of γ-Al2O3 and (Al,Cr,Ti)3O4 spinel that were deposited on the tool rake. Also on the rake, formation of (Ti,Nb,Cr)N takes place due to cBN-workpiece interaction.... (More)

Recently, PcBN tooling have been successfully introduced in machining Ni-based superalloys, yet our knowledge of involved wear mechanisms remains limited. In this study, an in-depth investigation of PcBN tool degradation and related wear mechanisms when machining Inconel 718 was performed. Diffusional dissolution of cBN is an active wear mechanism. At high cutting speed oxidation of cBN becomes equally important. Apart from degradation, tool protection phenomena were also discovered. Oxidation of Inconel 718 resulted in formation of γ-Al2O3 and (Al,Cr,Ti)3O4 spinel that were deposited on the tool rake. Also on the rake, formation of (Ti,Nb,Cr)N takes place due to cBN-workpiece interaction. This creates a sandwich tool protection layer forming continuously as tool wear progresses. Such in operando protection enabled counterbalancing tool wear mechanisms and achieved high performance of PcBN in machining.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Diffusion, Machining, Wear
in
CIRP Annals - Manufacturing Technology
volume
70
issue
1
pages
6 pages
publisher
Elsevier
external identifiers
  • scopus:85105874120
ISSN
0007-8506
DOI
10.1016/j.cirp.2021.04.008
language
English
LU publication?
yes
additional info
Funding Information: This research was partly funded by European Union's Horizon 2020 Research and Innovation Programme under Flintstone 2020 project (grant agreement No. 689279 ). It was also co-funded by strategic research programme of Sustainable Production Initiative (SPI), involving cooperation between Lund University and Chalmers University of Technology. The authors also would like to express their gratitude to Dr. Mathias Agmell for the help with FEM simulations. Authors are grateful to E. Brug ( University of Cambridge ) for fruitful and inspiring discussions. Publisher Copyright: © 2021 CIRP Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
id
51d91363-7255-4624-aaf9-e4ae690aa9cc
date added to LUP
2021-05-28 10:07:49
date last changed
2024-03-08 12:54:11
@article{51d91363-7255-4624-aaf9-e4ae690aa9cc,
  abstract     = {{<p>Recently, PcBN tooling have been successfully introduced in machining Ni-based superalloys, yet our knowledge of involved wear mechanisms remains limited. In this study, an in-depth investigation of PcBN tool degradation and related wear mechanisms when machining Inconel 718 was performed. Diffusional dissolution of cBN is an active wear mechanism. At high cutting speed oxidation of cBN becomes equally important. Apart from degradation, tool protection phenomena were also discovered. Oxidation of Inconel 718 resulted in formation of γ-Al<sub>2</sub>O<sub>3</sub> and (Al,Cr,Ti)<sub>3</sub>O<sub>4</sub> spinel that were deposited on the tool rake. Also on the rake, formation of (Ti,Nb,Cr)N takes place due to cBN-workpiece interaction. This creates a sandwich tool protection layer forming continuously as tool wear progresses. Such in operando protection enabled counterbalancing tool wear mechanisms and achieved high performance of PcBN in machining.</p>}},
  author       = {{Bushlya, Volodymyr and Lenrick, Filip and Bjerke, Axel and Aboulfadl, Hisham and Thuvander, Mattias and Ståhl, Jan Eric and M'Saoubi, Rachid}},
  issn         = {{0007-8506}},
  keywords     = {{Diffusion; Machining; Wear}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{73--78}},
  publisher    = {{Elsevier}},
  series       = {{CIRP Annals - Manufacturing Technology}},
  title        = {{Tool wear mechanisms of PcBN in machining Inconel 718 : Analysis across multiple length scale}},
  url          = {{http://dx.doi.org/10.1016/j.cirp.2021.04.008}},
  doi          = {{10.1016/j.cirp.2021.04.008}},
  volume       = {{70}},
  year         = {{2021}},
}