Cutting performance and wear mechanisms of TiAlN PVD-coated cemented carbide tool in high speed turning of Ti-5Al-2Sn-2Zr-4Mo-4Cr alloy

다국어 초록 (Multilingual Abstract)

The high-speed finish turning tests of Ti-17 titanium alloy (Ti-5Al-2Sn-2Zr-4Mo-4Cr) were carried out by using PVD cemented carbide tools with TiAlN coating. The machinability behaviors in terms of cutting forces, cutting temperatures, surface roughness, and tool service life were measured and evaluated under different machining parameter conditions, and the empirical prediction model of these variables were established depending on the cutting parameters. Incorporating the measured results of scanning electron microscopy (SEM) as well as energy dispersive spectroscopy (EDS), the initial tool wear patterns and the eventual wear patterns when the tool wear states meet the failure criteria were comparably investigated and analyzed. It was found that during the initial wear stage, the sticking wear zone and the sliding wear zone can be distinguished on the tool wear interface. The main wear patterns of are peeling off of coating material, crater wear of rake face, edge breakage and edge wear of tool tip after reaching the tool failure rejection criterion. The cutting tool wear mechanisms were systematically studied, and the results show that the wear mechanisms of a TiAlN PVD-coated carbide cutting tool in turning Ti-17 titanium alloy were dominated by the interaction wear effect among the adhesion, oxidation and diffusion between cemented carbide substrate and workpiece material.

참고문헌 (Reference)

1 L. R. da Silva, "Wear mechanisms of cutting tools in highspeed turning of Ti6Al4V alloy" 103 (103): 37-48, 2019

2 A. H. Li, "Wear mechanisms of coated carbide tools in high-speed dry milling of titanium alloy" 32 (32): 40-46, 2012

3 S. K. Khrais, "Wear mechanisms and tool performance of TiAlN PVD coated inserts during machining of AISI 4140 steel" 262 (262): 64-69, 2007

4 G. X. Li, "Wear mechanism of nano-TiAlN coated carbide tools in high speed milling AerMet100 steel" 30 (30): 150-156, 2010

5 M. Nouari, "Wear characteristics and performance of multi-layer CVD-coated alloyed carbide tool in dry end milling of titanium alloy" 200 (200): 5663-5676, 2006

6 V. P. Astakhov, "Tribology of Metal Cutting" 221-222, 2006

7 S. Trabelsi, "Tool wear and cutting forces under cryogenic machining of titanium alloy(Ti17)" 91 (91): 1493-1505, 2017

8 Y. Ayed, "Tool wear analysis and improvement of cutting conditions using the highpressure water-jet assistance when machining the Ti17 titanium alloy" 42 : 294-301, 2015

9 Y. Kaynak, "The effects of cutting parameters on machining performance of titanium alloy Ti-5553" 5 (5): 317-328, 2019

10 박경희, "The effect of cryogenic cooling and minimum quantity lubrication on end milling of titanium alloy Ti-6Al-4V" 대한기계학회 29 (29): 5121-5126, 2015

11 X. D. Lin, "Study on TiAlN films deposited by composite technology and its thermal anti-oxidation property" 39 (39): 22-25, 2010

12 V. Krishnaraj, "Study of finish milling of titanium alloy(Ti6Al4V)" 18 (18): 634-647, 2016

13 A. Li, "Progressive tool failure in high-speed dry milling of Ti-6Al-4V alloy with coated carbide tools" 58 (58): 465-478, 2012

14 T. Childs, "Metal Machining: Theory and Applications" Butterworth-Heinemann 2000

15 Michael Storchak, "Mechanical properties of subsurface layers in the machining of the titanium alloy Ti10V2Fe3Al" 대한기계학회 32 (32): 315-322, 2018

16 J. X. Deng, "Manual of CNC Cutting Tool Materials and Selection" China Machine Press 2005

17 X. Ai, "High Speed Machining Technology" National Defense Industry Press 2003

18 A. Li, "Failure mechanisms of a PCD tool in high-speed face milling of Ti–6Al–4V alloy" 67 (67): 1959-1966, 2013

19 B. L. Wang, "Experimental investigation on cutting forces and temperature in high speed turning of Ti-5Al-2Sn-2Zr-4Mo-4Cr(Ti-17)alloys" 472 : 1054-1058, 2012

20 A. H. Li, "Effect of cutting speed on chip formation and wear mechanisms of coated carbide tools when ultra-high-speed face milling titanium alloy Ti-6Al-4V" 9 (9): 2017

21 J. X. Deng, "Diffusion wear in dry cutting of Ti-6Al-4V with WC/Co carbide tools" 265 (265): 1776-1783, 2008

22 Q. B. Li, "Diffusion Controlled Reactions and Thermodynamics in Alloys" Liaoning Science and Technology Press 1984

23 Y. Ayed, "Degradation modes and tool wear mechanisms in finish and rough machining of Ti17 titanium alloy under high-pressure water jet assistance" 305 (305): 228-237, 2013

24 D. W. Tan, "Cutting performance and wear mechanism of TiB2-B4C ceramic cutting tools in high speed turning of Ti6Al4V alloy" 44 (44): 15495-15502, 2018

25 F. Wang, "Coated carbide tool failure analysis in high-speed intermittent cutting process based on finite element method" 83 (83): 805-813, 2016

26 D. Xu, "A friction model having multiple factors for high-speed cutting of aluminum alloy 6061-T6" 84 (84): 1941-1951, 2016