Ti-6Al-4V titanium alloy was dry turned by uncoated and AlCrSiN coated carbide inserts at three cutting speeds. It was found that the cutting life of AlCrSiN coated inserts exceeds uncoated inserts at all three cutting speeds and meanwhile the three values of cutting force
cutting temperature and workpiece surface roughness are lower than that of uncoated tools
which shows that AlCrSiN coating can effectively protect the substrate and maintain the sharpness of the tool. During the cutting process
the cutting force of both tools increased first and then decreased
which is related to the lubricating oxides produced by the two tools at high temperatures. Both cutting temperature and workpiece roughness have a positive correlation with the wear of the flank
that is
as the wear of the flank increases
the temperature and roughness increase accordingly
and incidentally
the increase in temperature is also related to the increase in plastic deformation and heat in the first deformation zone of the rake face. In addition
the chip size
color
and sawtooth frequency produced by the two tools also prove that the AlCrSiN coated tool has lower wear rate and cutting temperature than the uncoated tool.
关键词
Keywords
references
XIAO B J, LIU J, XIAO X L, et al . High speed machining of Ti-6Al-4V alloy with PVD coated carbide end mills under oils on water cooling [J ] . Journal of Guangdong University of Technology, 2018, 35(4): 10-24.
TRITREMMEL C, DANIEL R, LECHTHALER M, et al . Influence of Al and Si content on structure and mechanical properties of arc evaporated Al–Cr–Si–N thin films [J ] . Thin Solid Films, 2013, 534: 403-409.
CHEN H W, CHAN Y C, LEE J W, et al . Oxidation behavior of Si-doped nanocomposite CrAlSiN coatings [J ] . Surface and Coatings Technology, 2010, 205(5): 1189-1194.
POLCAR T, CAVALEIRO A. High temperature properties of CrAlN, CrAlSiN and AlCrSiN coatings – Structure and oxidation [J]. Materials Chemistry and Physics, 2011, 129(1): 195-201.
LEE D B, NGUYEN T D, KIM S K. Air-oxidation of nano-multilayered CrAlSiN thin films between 800 and 1 000 ℃ [J]. Surface and Coatings Technology, 2009, 203(9): 1199-1204.
SUN S Q, YE Y W, WANG Y X, et al . Structure and tribological performances of CrAlSiN coatings with different Si percentages in seawater [J ] . Tribology International, 2017, 115: 591-599.
WU W, CHEN W, YANG S, et al . Design of AlCrSiN multilayers and nanocomposite coating for HSS cutting tools [J ] . Applied Surface Science, 2015, 351: 803-810.
CAI F, GAO Y, ZHANG S, et al . Gradient architecture of Si containing layer and improved cutting performance of AlCrSiN coated tools [J ] . Wear, 2019, 424-425: 193-202.
CHANG Y Y, LAI H M. Wear behavior and cutting performance of CrAlSiN and TiAlSiN hard coatings on cemented carbide cutting tools for Ti alloys [J]. Surface and Coatings Technology, 2014, 259: 152-158.
WANG Q M, ZHANG X B, ZHANG S H, et al . Progress of high power impulse magnetron sputtering for deposition of hard coatings [J ] . Journal of Guangdong University of Technology, 2013, 30(4): 1-13.
JAFFERY S H I, MATIVENGA P T. Wear mechanisms analysis for turning Ti-6Al-4V—towards the development of suitable tool coatings [J]. The International Journal of Advanced Manufacturing Technology, 2012, 58(5): 479-493.
于海东. 钛合金切削用硬质合金刀具涂层制备、表征与性能分析[D]. 沈阳: 东北大学, 2015.
杨雷. 钛合金切削摩擦磨损的试验研究[D]. 南京: 南京航空航天大学, 2010.
DU G C. Experimental study on turning Ti6Al4V titanium alloy with cemented carbide tools [J]. Modular Machine Tool Automatic Manufacturing Technique, 2013(5): 36-38.
BASU S N, SARIN V K. Oxidation behavior of WC-Co [J]. Materials Science and Engineering: A, 1996, 209(1): 206-212.
DENG J X, ZHANG H, WU Z, et al . Friction and wear behaviors of WC/Co cemented carbide tool materials with different WC grain sizes at temperatures up to 600 ℃ [J ] . International Journal of Refractory Metals and Hard Materials, 2012, 31: 196-204.
STROHMEIER B R. Characterization of an activated alumina claus catalyst by XPS [J]. Surface Science Spectra, 1994, 3(2): 141-146.
CARLEY A F, ROBERTS M W. An X-Ray photoelectron spectroscopic study of the interaction of oxygen and nitric oxide with aluminium [J]. Proceedings of the Royal Society A Mathematical Physical Engineering Sciences, 1978, 363(1714): 403-424.
ENDRINO J L, FOX-RABINOVICH G S, REITER A, et al . Oxidation tuning in AlCrN coatings [J ] . Surface and Coatings Technology, 2007, 201(8): 4505-4511.
FINSTER J, KLINKENBERG E D, HEEG J. ESCA and SEXAFS investigations of insulating materials for ULSI microelectronics [J]. Vacuum, 1990, 41(7): 1586-1589.
ZHAO Y S, LI W, LIU P, et al . Research progress of tisin anocomposite coating [J ] . Materials for Mechanical Engineering, 2013, 37(6): 6-10.
CHANG C C, CHEN H W, LEE J W, et al . Development of Si-modified CrAlSiN nanocomposite coating for anti-wear application in extreme environment [J ] . Surface and Coatings Technology, 2015, 284: 273-280.