Performance analysis and comparative assessment of nano-composite TiAlSiN/TiSiN/TiAlN coating in hard turning of AISI 52100 steel

The present study investigates the machining performance of coatings deposited by cathode arc evaporation (CAE) and DC reactive magnetron sputtering (DCRMS) process with different structures and deposition layers on Al2O3/TiCN ceramic inserts in turning of hardened steel under dry cutting environmen...

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Bibliographic Details
Published in:Surface & coatings technology 2018-02, Vol.335, p.265-279
Main Authors: Kumar, Ch. Sateesh, Patel, Saroj Kumar
Format: Article
Language:English
Subjects:
Abrasives
Aluminum oxide
Arc deposition
Cathode sputtering
Chemical vapor deposition
Chromium steels
Coatings
Composite ceramic tool
Cutting tools
Flaking
Free surfaces
Hard machining
Inserts
Magnetron sputtering
Micromachining
Multilayers
Nano-composite coating
Nanocomposites
PVD coating
Reactive magnetron sputtering
Steel
Surface defects
Titanium carbonitride
Turning (machining)
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Summary:The present study investigates the machining performance of coatings deposited by cathode arc evaporation (CAE) and DC reactive magnetron sputtering (DCRMS) process with different structures and deposition layers on Al2O3/TiCN ceramic inserts in turning of hardened steel under dry cutting environment. Mono-layered AlCrN and multi-layered AlTiN were deposited using CAE process whereas nano-structured TiAlSiN/TiSiN/TiAlN coating was deposited using DCRMS process. The coated tools resulted in improved machining performance when compared to uncoated cutting tool. The CAE process resulted in surface defects like droplets and pores whereas the sputtering process generated droplet free surface that helped in superior performance of TiAlSiN/TiSiN/TiAlN coating when compared with AlTiN and AlCrN coatings. Moreover, nanostructure in TiAlSiN/TiSiN/TiAlN coating prevented coating flaking or peeling and ensured superior anti-abrasive behaviour due to its amorphous structure. •CAE deposited coatings resulted in formation of surface droplets and pores.•DCRMS process generated droplet free surface for coatings.•PVD coatings resulted in reduction of friction with DCRMS coated tool exhibiting lowest friction coefficient.•Nanocomposite structure of TiAlSiN/TiSiN/TiAlN coating prevented coating flaking or peeling resulting in superior machining performance.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2017.12.048