Hardening the hard-alloy edge tool used for cutting of tough-to-machine titanium alloys and chromium–nickel steels with multilayered nanostructured coatings

Complex investigations into physicomechanical properties and adhesion strength in the «coating–carbide cutting insert» system of 
monolayered (Ti–Al–N) and multilayered (Ti–Al–N/Cr–N, Ti–Al–N/Zr–N/Cr–N) are performed. The advantage of using the latter; which is associated with the passage from the adhesion mechanism of coating destruction to the cohesion mechanism; with an increase in parameters H3/E2 and H/E that characterize the material resistance to plastic and elastic deformation, respectively; is shown. The introduction of chromium into the composition of Ti–Al–N coatings provides a decrease in friction coefficient (from 0,52 to 0,45) and a decrease in probability of adhesion interaction with the treated material. Comparative operational tests of carbide cutting insets (CCI) with coatings under study in the course of continuous cutting steel 12H18N10Т showed that largest wear resistance of Ti–Al–N/Zr–N/Cr–N coatings. Wear tests of CCIs made of VK6NST and TT10K8B alloys with Ti–Al–N/Zr–N/Cr–N coatings in the course of longitudinal turning steel 12H18N10Т and VT20 alloy evidence an increase in their resistance up to a factor of 3,0–3,5 both at low and high cutting rates. These coatings provide an increase in resistance of cutting tool and in milling operations of VT20 titanium alloy at cutting velocity up to 40 m/min.

1. Cheng-Dong Wang, Ming Chen, Qin-Long An, Yi-Hong Zhu. Tool wear performance in face milling Inconel 182 using minimum quantity lubrication with different nozzle positions. Intern. J. Prec. Eng. Manufact. 2013. Vol. 15. No. 3. P. 557—565.

2. Krishnaraj V., Samsudeensadham S., Sindhumathi R., Kuppan P. A study on high speed and milling of titanium alloy. Proc. Eng. 2014. Vol. 97. Р. 251—257.

3. Yin-Yu Chang, Hsing-Ming Lai. Wear behavior and cutting performance of CrAlSiN and TiAlSiN hard coatings on cemented carbide cutting tools for Ti alloys. Surf. Coat. Technol. 2014. Vol. 259. P. 152—158.

4. Volkhonskii A.O., Blinkov I.V. Influence of deposition parameters of the Ti—Al—N/Zr—Nb—N—Cr—N multilayered nanostructured coating obtained by the arc-PVD method on their physicomechanical, tribological, and operational properties. Russ. J. Non-Ferr. Met. 2012. Vol. 53. P. 259—265.

5. Biksa A., Yamomoto K., Dosbaeva G., Veldhuis S.C., Fox-Rabinovich G.S., Elfizy A., Wagg T., Shuster L.S. Wear behavior of adaptive nano-multilayered AlTiN/MexN PVD coatings during machining of aerospace alloys. Tribology Intern. 2010. Vol. 43. Р. 1491—1499.

6. Harris S.G., Doyle E.D., Vlasveld A.C., Dolder P.J. Dry cutting performance of partially filtered arc deposited titanium aluminium nitride coatings with various metal nitride base coatings. Surf. Coat. Technol. 2001. Vol. 146—147. Р. 305—311.

7. Barshilia H.C., Jain A., Rajam K.S. Structure, hardness and thermal stability of nanolayered TiN/CrN multilayer coatings. Vacuum. 2004. Vol. 72. Р. 241—248.

8. Lewis D.B., Wadsworf I., Munz W.-D., Kuzel Jr.R., Valvoda V. Structure and stress of TiAlN/CrN superlattice coatings as a function of CrN layer thikness. Surf. Coat. Technol. 1999. Vol. 116—119. Р. 284—291.

9. Fox-Rabinovich G.S., Yamamoto K., Veldhuis S.C., Kovalev A.I., Shuster L.S., Ning L. Self-adaptive wear behavior of nano-multilayered TiAlCrN/WN coatings under severe machining conditions. Surf. Coat. Technol. 2006. Vol. 201. Р. 1852—1860.

10. Luo Q., Robinson G., Howarth M., Sim W.-M., Stalley M.R., Leitner H., Ebner R., Caliskanoglu D., Hovsepian P.Eh. Performance of nano-structured multilayer PVD coating TiAlN/VN in dry high speed milling of aerospace aluminium 7010-T7651. Surf. Coat. Technol. 2005. Vol. 200. Р. 123—127.

11. Blinkov I.V., Volkhonskii A.O., Kuznetsov D.V., Skryleva E.A. Investigation of structure and phase formation in multilayer coatings and their thermal stability. J. Alloys Compd. 2014. Vol. 586. P. S381—S386.

12. Anikin V.N., Blinkov I.V., Volkhonskii A.O., Sobolev N.A., Tsareva S.G., Kratokhvil R.V., Frolov A.E. Ion-plasma Ti—Al—N coatings on a cutting hard-alloy tool operating under conditions of constant and alternating-sign loads. Russ. J. Non-Ferr. Met. 2009. Vol. 50. No. 4. Р. 424—431.

13. Blinkov I.V., Tsareva S.G., Zentseva A.V., Volkhonskii A.O., Buzanov V.I., Stepareva N.N. Structure and phase formation of nanostructural ion—plasma Ti—Cr—Al—N coatings on a ard alloy cutting tool. Russ. J. Non-Ferr. Met. 2010. Vol.51. No. 6. Р. 483—489.

14. Zhou Yaomin, Asaki Reo, Soe We-Hyo, Yamamoto Ryoichi, Chen Rong, Iwabuchi Akira. Hardness anomaly, plastic deformation work and fretting wear properties of polycrystalline TiN/CrN multilayers. Wear. 1999. Vol. 236. Р. 159—164.

15. Gutkin M.Yu., Ovid’ko I.A. Fizicheskaya mehanika deformiruemyh nanostruktur. T. 1. Nanokristallicheskie materialy [Physical mechanics of deformable nanostructures. Vol. 1. Nanocrystalline materials]. St. Petersburg: Yanus,2003.

16. Leyland A., Matthews A. On the signification of the H/E ratio in wear control: a nanocomposite coatings approach to optimized tribological behavior. Wear. 2000. Vol. 246. P. 1—11.