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On chemical interactions between an inclusion engineered stainless steel (316L) and (Ti,Al)N coated tools during turning

Bjerke, Axel LU orcid ; Lenrick, Filip LU orcid ; Hrechuk, Andrii LU orcid ; Slipchenko, Kateryna LU orcid ; M'Saoubi, Rachid LU ; Andersson, Jon M. and Bushlya, Volodymyr LU (2023) In Wear 532-533.
Abstract

Non-metallic inclusions offer one of the most effective routes for improving the machinability of steels. However, the wear-reducing mechanisms activated by such inclusions are not fully understood. The interactions are notoriously difficult to predict due to the wide variety of steel grades, cutting conditions, and tool materials employed in industry. The interaction between PVD (Ti,Al)N coated cemented carbide tools, non-metallic inclusions, atmospheric oxygen, and the stainless steel 316L in a turning operation is therefore investigated here as a case study. The study includes turning experiments, nanometer resolution microscopy, and thermodynamic calculations. The paper explains how not only too high a contact pressures hinder the... (More)

Non-metallic inclusions offer one of the most effective routes for improving the machinability of steels. However, the wear-reducing mechanisms activated by such inclusions are not fully understood. The interactions are notoriously difficult to predict due to the wide variety of steel grades, cutting conditions, and tool materials employed in industry. The interaction between PVD (Ti,Al)N coated cemented carbide tools, non-metallic inclusions, atmospheric oxygen, and the stainless steel 316L in a turning operation is therefore investigated here as a case study. The study includes turning experiments, nanometer resolution microscopy, and thermodynamic calculations. The paper explains how not only too high a contact pressures hinder the formation of protective deposits at the tool edge, but also how too low a contact pressure leads to excessive wear. A range of conditions specified in this paper must therefore be met for the two observed protective non-metallic inclusions Mg1Al2O4 and Al2Ca2Si1O7 to be preferentially deposited on a tool. Hence the coating wear is experimentally investigated, explained, and a thermodynamic calculation method for predicting the protective or degenerative potential of a deposit on the coating is presented.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Wear
volume
532-533
article number
205093
publisher
Elsevier
external identifiers
  • scopus:85168441197
ISSN
0043-1648
DOI
10.1016/j.wear.2023.205093
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2023 The Authors
id
1a65a35e-cf63-45b3-af2b-a2654d66e343
date added to LUP
2023-09-03 06:57:16
date last changed
2024-03-08 08:55:00
@article{1a65a35e-cf63-45b3-af2b-a2654d66e343,
  abstract     = {{<p>Non-metallic inclusions offer one of the most effective routes for improving the machinability of steels. However, the wear-reducing mechanisms activated by such inclusions are not fully understood. The interactions are notoriously difficult to predict due to the wide variety of steel grades, cutting conditions, and tool materials employed in industry. The interaction between PVD (Ti,Al)N coated cemented carbide tools, non-metallic inclusions, atmospheric oxygen, and the stainless steel 316L in a turning operation is therefore investigated here as a case study. The study includes turning experiments, nanometer resolution microscopy, and thermodynamic calculations. The paper explains how not only too high a contact pressures hinder the formation of protective deposits at the tool edge, but also how too low a contact pressure leads to excessive wear. A range of conditions specified in this paper must therefore be met for the two observed protective non-metallic inclusions Mg<sub>1</sub>Al<sub>2</sub>O<sub>4</sub> and Al<sub>2</sub>Ca<sub>2</sub>Si<sub>1</sub>O<sub>7</sub> to be preferentially deposited on a tool. Hence the coating wear is experimentally investigated, explained, and a thermodynamic calculation method for predicting the protective or degenerative potential of a deposit on the coating is presented.</p>}},
  author       = {{Bjerke, Axel and Lenrick, Filip and Hrechuk, Andrii and Slipchenko, Kateryna and M'Saoubi, Rachid and Andersson, Jon M. and Bushlya, Volodymyr}},
  issn         = {{0043-1648}},
  language     = {{eng}},
  month        = {{11}},
  publisher    = {{Elsevier}},
  series       = {{Wear}},
  title        = {{On chemical interactions between an inclusion engineered stainless steel (316L) and (Ti,Al)N coated tools during turning}},
  url          = {{http://dx.doi.org/10.1016/j.wear.2023.205093}},
  doi          = {{10.1016/j.wear.2023.205093}},
  volume       = {{532-533}},
  year         = {{2023}},
}