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  4. Self-lubricating CrAlMoN high performance tool coatings for machining of TiAl6V4
 
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Self-lubricating CrAlMoN high performance tool coatings for machining of TiAl6V4

Citation Link: https://doi.org/10.15480/882.4956
Publikationstyp
Journal Article
Date Issued
2023-06
Sprache
English
Author(s)
Bobzin, Kirsten  
Kalscheuer, Christian  
Carlet, Marco  
Stachowski, Nina  
Hintze, Wolfgang  
Möller, Carsten  orcid-logo
Ploog, Petter  
Institut
Produktionsmanagement und -technik M-18  
TORE-DOI
10.15480/882.4956
TORE-URI
http://hdl.handle.net/11420/13960
Journal
Production engineering  
Volume
17
Issue
3-4
Start Page
437
End Page
444
Citation
Production Engineering 17 (3-4): 437-444 (2023-06)
Publisher DOI
10.1007/s11740-022-01161-8
Scopus ID
2-s2.0-85138254056
TiAl6V4 allows significant performance improvements in industrial applications. However, the machining is a considerable challenge due to low thermal conductivity, Young’s modulus and strong adhesion tendency. This leads to high thermal and mechanical loads on the cutting edge resulting in early tool failure. Today, uncoated cemented carbide tools are commonly used. However, temperature active physical vapor deposition (PVD) coatings like CrAlVN and CrAlMoN provide a promising approach to increase tool life. For this, the coating’s ability to form lubricating oxide phases is vital. In the present study, CrAlVN and CrAlMoN coatings were investigated to determine the more suitable version for increasing the economic efficiency of machining TiAl6V4. The coatings were deposited by hybrid direct current magnetron sputtering/high power pulsed magnetron sputtering (dcMS/HPPMS) processes. Morphology, thickness, chemical composition, indentation hardness, indentation modulus and oxide phase composition were analyzed. Moreover, friction and wear behavior of the coated tools were determined using a pin on disc (PoD) tribometer at various temperatures. Additionally, tool life and deformation behavior were analyzed after turning TiAl6V4. The CrAlVN and CrAlMoN coatings show a dense morphology and a smooth surface topography. Both variants have a good adhesion to the cemented carbide tools. For increased temperatures, the tribological analyses showed a reduction in the coefficient of friction. In case of CrAlMoN coated samples, a friction reduction compared to CrAlVN was observed at lower temperatures. Due to this, an increased tool life was achieved for CrAlMoN coated cutting inserts during turning of TiAl6V4.
Subjects
Molybdenum oxides
Physical vapor deposition
Self-lubrication
TiAl64V4
Turning
Vanadium oxides
DDC Class
620: Ingenieurwissenschaften
Funding(s)
Untersuchung temperaturaktiver, reibungsmindernder Schichtsysteme für die Drehbearbeitung von Titanlegierungen (Phase II)  
Publication version
publishedVersion
Lizenz
https://creativecommons.org/licenses/by/4.0/
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