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Performance and wear mechanisms of whisker-reinforced alumina, coated and uncoated PCBN tools when high-speed turning aged Inconel 718

Bushlya, Volodymyr LU ; Zhou, Jinming LU ; Avdovic, Pajazit and Ståhl, Jan-Eric LU (2013) In International Journal of Advanced Manufacturing Technology 66(9-12). p.2013-2021
Abstract (Swedish)
Abstract in Undetermined

Inconel 718, an efficient superalloy for energy and aerospace applications, is currently machined with cemented carbide tools at low speed (vc≈60 m/min) due to its unfavorable mechanical and thermal properties. The article presents results of a study of superalloy machinability with whisker reinforced alumina, uncoated and coated PCBN tools. Turning of age hardened Inconel 718 (45 HRC) was done under high speed machining conditions (vc=250…350 m/min). Aspects of tool life, tool wear and generated surface quality were studied. Application of uncoated PCBN tools resulted in surface quality and force level superior to other tool materials. Considerable side-flow of workpiece material was found to... (More)
Abstract in Undetermined

Inconel 718, an efficient superalloy for energy and aerospace applications, is currently machined with cemented carbide tools at low speed (vc≈60 m/min) due to its unfavorable mechanical and thermal properties. The article presents results of a study of superalloy machinability with whisker reinforced alumina, uncoated and coated PCBN tools. Turning of age hardened Inconel 718 (45 HRC) was done under high speed machining conditions (vc=250…350 m/min). Aspects of tool life, tool wear and generated surface quality were studied. Application of uncoated PCBN tools resulted in surface quality and force level superior to other tool materials. Considerable side-flow of workpiece material was found to affect surface quality, especially for coated PCBN and ceramic tools. It was found that protective function of the coating, which increases the tool life up to 20%, is limited only to low cutting speed range. EDX and AFM analyses suggested dominance of chemical and abrasive wear mechanisms. EDX mapping of worn tools pointed absence of diffusional wear for PCBN tools and intensive degradation of whisker reinforcement in ceramic tools due to diffusion of Ni, Fe and Cr. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Journal of Advanced Manufacturing Technology
volume
66
issue
9-12
pages
2013 - 2021
publisher
Springer
external identifiers
  • wos:000319557200071
  • scopus:84879116825
ISSN
0268-3768
DOI
10.1007/s00170-012-4477-5
language
English
LU publication?
yes
id
f5844dfc-4bcf-4044-b655-eb1d945869af (old id 3403710)
date added to LUP
2016-04-01 13:39:34
date last changed
2020-04-01 03:56:54
@article{f5844dfc-4bcf-4044-b655-eb1d945869af,
  abstract     = {<b>Abstract in Undetermined</b><br/><br>
Inconel 718, an efficient superalloy for energy and aerospace applications, is currently machined with cemented carbide tools at low speed (vc≈60 m/min) due to its unfavorable mechanical and thermal properties. The article presents results of a study of superalloy machinability with whisker reinforced alumina, uncoated and coated PCBN tools. Turning of age hardened Inconel 718 (45 HRC) was done under high speed machining conditions (vc=250…350 m/min). Aspects of tool life, tool wear and generated surface quality were studied. Application of uncoated PCBN tools resulted in surface quality and force level superior to other tool materials. Considerable side-flow of workpiece material was found to affect surface quality, especially for coated PCBN and ceramic tools. It was found that protective function of the coating, which increases the tool life up to 20%, is limited only to low cutting speed range. EDX and AFM analyses suggested dominance of chemical and abrasive wear mechanisms. EDX mapping of worn tools pointed absence of diffusional wear for PCBN tools and intensive degradation of whisker reinforcement in ceramic tools due to diffusion of Ni, Fe and Cr.},
  author       = {Bushlya, Volodymyr and Zhou, Jinming and Avdovic, Pajazit and Ståhl, Jan-Eric},
  issn         = {0268-3768},
  language     = {eng},
  number       = {9-12},
  pages        = {2013--2021},
  publisher    = {Springer},
  series       = {International Journal of Advanced Manufacturing Technology},
  title        = {Performance and wear mechanisms of whisker-reinforced alumina, coated and uncoated PCBN tools when high-speed turning aged Inconel 718},
  url          = {https://lup.lub.lu.se/search/ws/files/3511223/4732897.pdf},
  doi          = {10.1007/s00170-012-4477-5},
  volume       = {66},
  year         = {2013},
}