Experimental Investigation and Finite Element Analysis of Milling of Ti-6Al-4V Titanium Alloy by Studying Cutting Forces and Chip Microstructure

Abstract:

Titanium alloys are commonly used for many aerospace and medical applications because of their properties like high strength to weight ratio, corrosion resistance and heat treatment capabilities. But, due to the factors like low thermal conductivity and chemical reactivity with the cutting tool, it poses a challenge for the machining operations. In this study, a 3D Finite Element Model of the milling process of Ti-6Al-4V, titanium alloy has been developed using Deform 3D FE software. Milling was done experimentally under different speeds and feed rates using a Tungsten carbide end mill cutter. The cutting forces obtained from FEM study were compared and validated with the experimental results. The machinability of the Titanium alloy was investigated using cutting forces and chip microstructure.

• Periodical: Applied Mechanics and Materials (Volume 852)
• Pages: 311-316
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.852.311
• Online since: September 2016
• Authors: P.R. Shivaram*, K. Sushinder, S.B. Nivedh Kannaa, Nisarg Gupta, K.S. Vijay Sekar
• Keywords: Chip Formation, Cutting Forces, Finite Element Method (FEM), Milling, Ti6Al4V

References

[1] Thanongsak Thepsonthi, Tu˘grul Özel, 3-D finite element process simulation of micro-end milling Ti-6Al-4Vtitanium alloy: Experimental validations on chip flow and tool wear, Journal of Materials Processing Technology, 221(2015) 128-145.

DOI: 10.1016/j.jmatprotec.2015.02.019

[2] Komanduri R, Turkovich BF, New observations on the mechanism of chip formation when machining titanium alloys, Wear, 69(1981) 179–188.

DOI: 10.1016/0043-1648(81)90242-8

[3] M. Calamaz, D. Coupard, M. Nouari and F. Girot , Numerical analysis of chip formation and shear localisation processes in machining the Ti-6Al-4V titanium alloy, The International Journal of Advanced Manufacturing Technology , 52(2010) 887-895.

DOI: 10.1007/s00170-010-2789-x

[4] Vijay S, Krishnaraj V, Machining Parameter in End Milling of Ti-6Al-4V, Procedia Engineering, 64(2013) 1079-1088.

DOI: 10.1016/j.proeng.2013.09.186

[5] V Krishnaraj, S Samsudeensadham, R Sindhumathi, P Kuppan, A study on high speed end milling of titanium alloy, Procedia Engineering, 97 ( 2014 ) 251 – 257.

DOI: 10.1016/j.proeng.2014.12.248

[6] M.C. Shaw, S.O. Dirke, P.A. Smith, N.H. Cook, E.G. Loewen, C.T. Yang, Titanium, MIT Report to US Air Force, (1954).

[7] A. Molinari, C. Musquar, G. Sutter, Adiabatic shear banding in high speedmachining of Ti–6Al–4V: experiments and modeling, International Journal ofPlasticity 18 (2002) 443–459.

DOI: 10.1016/s0749-6419(01)00003-1

[8] L.N. Lopez de lacalle, J. Perez, J.I. Llorente, J.A. Sanchez, Advanced cuttingconditions for the milling of aeronautical alloys, Journal of MaterialsProcessing Technology 100 (2000) 1–11.

[9] A.K.M.N. Amin, N.V. Talantov, Influence of the instability of chip formationand preheating of work on tool life in machining high temperature resistantsteel and titanium alloys, Mechanical Engineering Research Bulletin 9 (1986)52–62.

[10] DEFORM-3D User's Manual, vol. 6. 5, (2010).