M.Tech, B-Tech

Rahulan N. currently serves as Assistant Professor at the Department of Mechanical Engineering, School of Engineering, Amrita Vishwa Vidyapeetham, Amritapuri.

Currently, Rahulan is pursuing his Ph. D. at NIT Trichy on part-time basis on the topic "Magnesium Lithium Composites". He completed his B.Tech. in Mechanical Engineering from Amrita Vishwa Vidyapeetham, Amritapuri in 2009. He pursued his Masters in Material Science and Engineering from NIT Trichy in 2014. Prior to joining Amrita, he worked as a Lecturer in Mechanical Engineering at Vellappally Natesan College of Engineering (now Mahaguru Institute of Technology) from 2010-2012.


  • Pursuing Ph. D.  (Topic: Magnesium Lithium Composites)
    NIT Trichy (Part-time basis)
  • 2014: M. Tech. in Materials Science and Engineering
    NIT Trichy
  • 2009:  B.Tech. in Mechanical Engineering
    School of Engineering, Amrita Vishwa Vidyapeetham, Amritapuri

Professional Appointments

Present Assistant Professor, Department of Mechanical Engineering, School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore
2010 – 2012 Lecturer in Mechanical Engineering, Vellappally Natesan College of Engineering (now Mahaguru institute of technology) 


Publication Type: Conference Proceedings

Year of Publication Title


Arun Sukumaran and Rahulan N., “Effect of ZrO2 nanoparticle coating on pure zirconium by PEO-EPD method”, AIP Conference Proceedings, vol. 2134, no. 1. p. 050009, 2019.[Abstract]

In the present study, oxide layer was formed on zirconium substrate by plasma electrolytic oxidation (PEO). The zirconia nanoparticles were incorporated in to the PEO coating structure by the electrophoretic deposition process (EPD). The coating was produced in an alkaline phosphate electrolyte with a time period of 6min. The microstructural features, phase composition, wettability properties and corrosion behavior were analyzed. The nanoparticle incorporation substantially modifies the surface morphology. The thickness of the coating found to be increased with the particle addition. Wettability also enhanced. The electrochemical corrosion studies indicate that the nanoparticle addition very well enhanced the corrosion resistance properties of the coating. © 2019 Author(s).

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Rahul V. Raj, Rahulan N., Rahul S. Unnithan, and G. Rohit Krishnan, “The characteristics study of HVOF coated AZ91D magnesium alloy with silicon carbide and stainless steel”, AIP Conference Proceedings, vol. 2105, no. 1. p. 020024, 2019.[Abstract]

High Velocity Oxygen Fuel thermal spraying has been performed on AZ91D magnesium alloy with different compositions of Stainless Steel 316(ss316) and Silicon Carbide (SiC) to study and improve the surface characteristics of the substrate. The corrosion analysis, M icro Hardness analysis and Surface Roughness analysis were conducted on the coated and non-coated substrates. The experimental results obtained indicates that both corrosion resistance and hardness of the coated substrate were significantly improved on comparison with non-coated substrate also surface roughness value obtained indicates much improved characteristics which contribute to the better and wide application of AZ91D M agnesium Alloy.

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Rahulan N., Dr. Sundararaman Gopalan, and Kumaran S., “Effect of Lithium on the Mechanical Behavior of Magnesium”, Materials Today: Proceedings, vol. 18, Part 7. pp. 2573 - 2580, 2019.[Abstract]

Lithium is the metal with lowest density. Lithium addition to the magnesium results in an ultra-light weight alloy with excellent properties on a mass basis. In this work, the effect of lithium content on mechanical properties of magnesium were studied. Vacuum stir casting method was employed to cast the alloys. The extrusion of these binary alloys was carried out. Microstructures of all alloys were taken. Tensile tests of extruded alloys were conducted and property values were noted. Micro hardness test was conducted on both cast and extruded alloys.

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Rahulan N., Dr. Sundararaman Gopalan, and Kumaran S., “Mechanical behavior of Mg-Li-Al alloys”, Materials Today: Proceedings, vol. 5, no. 9, Part 3. pp. 17935 - 17943, 2018.[Abstract]

Magnesium is considered as one of the lightest structural materials, while lithium is the lightest metal in the periodic table. The alloy of magnesium with lithium results in an ultra-light weight family of alloys which offer very good strength to weight ratio, ductility, damping capacity etc. This work was carried out to understand the effect of aluminum addition on the mechanical properties of these binary alloys. The alloy was prepared by stir casting technique in argon atmosphere. The cast alloy was homogenized and extruded for different compositions. The properties such as density, hardness, tensile strength, yield strength, % elongation were measured for extruded alloys. Extruded alloys were also subjected to rolling. Properties such as density and hardness were measured for rolled alloys. Significant improvement in tensile properties and hardness were achieved by the addition of aluminum

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