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Experimental evaluation of machinability performance of CNT coated HSS tool during turning of titanium alloy

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Abstract

The present research deals with the deposition of carbon nanotubes (CNT) over the HSS tool, and to evaluate the machining performance of the coated tool with respect to the important machinability aspects like cutting tip temperature, cutting forces, surface roughness and tool wear and life. The plasma enhanced chemical vapour deposition (PECVD) technique was employed to deposit CNTs over the substrate. Microstructural investigations through SEM and Raman spectroscopy were carried out to acknowledge the dense deposition of CNTs. Scratch test was also performed to validate the bonding strength of the coated layer with the substrate. Machining experimental results under three different cutting conditions, concluded that the CNT coated tool is the right potential candidate for turning tougher materials. Drastic depletion in cutting tip temperature and cutting forces to the extent of 70 to 80 % was observed for coated tool due to the excellent mechanical and thermal properties of CNTs. However, there was no significant effect of coating to influence the surface roughness at a lower level of cutting conditions, but considerable improvement has been observed at elevated cutting condition. The tool wear and life analysis explored the steady improvement to a remarkable extent. Very specifically, under elevated machining conditions, tool life investigations concluded the fact that the CNT coated tool has a tool life of more than 60 minutes with negligible failure.

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Authors and Affiliations

  1. Dhirajlal Gandhi College of Technology, Salem, 636309, Tamilnadu, India

    M. Chandru

  2. Coimbatore Institute of Technology, Coimbatore, 641014, Tamilnadu, India

    V. Selladurai

  3. Adama Science and Technology University, Adama, Ethiopia

    C. Venkatesh

Authors
  1. M. Chandru
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  2. V. Selladurai
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  3. C. Venkatesh
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Corresponding author

Correspondence to M. Chandru.

Additional information

M. Chandru received the Master’s degree in Engineering Design from Anna University, India and Bachelor’s degree in Mechanical Engineering from Bharathiar University, India. He is currently working as Assistant Professor in the Department of Mechanical Engineering at Dhirajlal Gandhi College of Technology, Salem, India. His research interests are surface engineering, metal cutting, nano cutting fluids and optimization techniques.

V. Selladurai received the B.E. and M.E. degrees in Production Engineering and Industrial Engineering from Madras University, India in 1980 and 1982, respectively. He obtained his Ph.D. in Mechanical Engineering from Bharathiar University, India in 1994. He is currently working as Professor in Mechanical Engineering and Principal of Coimbatore Institute of Technology, Coimbatore, India. His research interests include manufacturing systems engineering, optimization techniques, industrial and production engineering.

C. Venkatesh received M.E. (Gold Medalist) and Ph.D. from Anna University, Chennai. He is currently working as Assistant Professor in Adama Science and Technolgy University, Adama, Ethiopia. His area of research interest extends to design of metal forming dies, finite element method, surface engineering, micro and nano composite, nano cutting fluids and optimization techniques.

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Chandru, M., Selladurai, V. & Venkatesh, C. Experimental evaluation of machinability performance of CNT coated HSS tool during turning of titanium alloy. J Mech Sci Technol 35, 2141–2150 (2021). https://doi.org/10.1007/s12206-021-0430-6

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  • DOI: https://doi.org/10.1007/s12206-021-0430-6

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